Reference & Language in Nonfiction Audiobooks

Shopping Cart

Item(s) unavailable for purchase

Please review your cart. You can remove the unavailable item(s) now or we'll automatically remove it at Checkout.

itemsitem

- Unlimited access to eBooks
  
  Unlimited access to audiobooks
  
  No commitment, cancel anytime at kobo.com/account/subscriptions
  
  Get 1 credit every month for the audiobook of your choice
  
  No commitment, cancel anytime at kobo.com/account/subscriptions
  
  Unlimited access to eBooks
  
  Unlimited access to audiobooks
  
  No commitment, cancel anytime at kobo.com/account/subscriptions
  Audiobook
  by ,
  
  Available:
  
  . No commitment, cancel anytime at kobo.com/account/subscriptions.
  
  Pre-order
  1 audiobook monthly
  
  + FREE 30-day trial
  
  Special Offer
  
  Get 1 credit every month to exchange for an audiobook of your choice
  
  *No commitment, cancel anytime
  
  FREE

itemsitem

Unlimited access to eBooks

Unlimited access to audiobooks

No commitment, cancel anytime at kobo.com/account/subscriptions

Get 1 credit every month for the audiobook of your choice

No commitment, cancel anytime at kobo.com/account/subscriptions

Unlimited access to eBooks

Unlimited access to audiobooks

No commitment, cancel anytime at kobo.com/account/subscriptions
Audiobook
by ,

Available:
. No commitment, cancel anytime at kobo.com/account/subscriptions.

Pre-order
1 audiobook monthly

+ FREE 30-day trial

Special Offer

Get 1 credit every month to exchange for an audiobook of your choice

*No commitment, cancel anytime

FREE

Recommended For You

Audiobook

The Wedding People

The hilarious and moving million-copy bestseller

by Alison Espach ...

Narrated by Helen Laser ...

Unabridged

11 hours 37 min

The smash-hit international bestseller A Read With Jenna book club pick Winner of the Goodreads Choice Award for Fiction'Best read of the year' THE TIMES'Books as fun as this one are few and far between' GUARDIAN'Sharp, funny and a joy to read' OBSERVERPhoebe Stone arrives at a grand beachside hotel in Rhode Island wearing he... ... Read more

Was €26.92 Now €5.99

The smash-hit international bestseller A Read With Jenna book club pick Winner of the Goodreads Choice Award for Fiction'Best read of the year' THE TIMES'Books as fun as this one are few and far between' GUARDIAN'Sharp, funny and a joy to read' OBSERVERPhoebe Stone arrives at a grand beachside hotel in Rhode Island wearing he...
... Read more
Audiobook

A Thread of Violence

A Story of Truth, Invention, and Murder

by Mark O'Connell ...

Narrated by Mark O'Connell ...

Unabridged

7 hours 25 min

From an award-winning author comes a tale of a notorious double-murder, for readers of Truman Capote's In Cold Blood, or Emmanuel Carrère's The Adversary.In 1982 Malcolm Macarthur, the wealthy heir to a small estate, found himself suddenly without money. The solution, he decided, was to rob a bank. To do this, he would need a gun and a car. In the process of procuring them, he killed two people, ... Read more

€12.44

From an award-winning author comes a tale of a notorious double-murder, for readers of Truman Capote's In Cold Blood, or Emmanuel Carrère's The Adversary.In 1982 Malcolm Macarthur, the wealthy heir to a small estate, found himself suddenly without money. The solution, he decided, was to rob a bank. To do this, he would need a gun and a car. In the process of procuring them, he killed two people,
... Read more
Audiobook

A Mother's Secret

The heartbreaking, unforgettable new novel from Irish novelist Caroline Finnerty

by Caroline Finnerty ...

Narrated by Caroline Lennon ...

Unabridged

9 hours 21 min

A gripping, emotional book that asks the question: What does it take to be a parent? From the bestselling author of The Last Days of UsIn one split second, Aidan Whelan's perfect world is changed forever when his wife Rowan and three-year-old daughter Milly are involved in a tragic accident.Helena O'Herlihy and her husband James have been struggling in their marriage but a knock on the door ... Read more

€21.81 or Free with Kobo Plus

A gripping, emotional book that asks the question: What does it take to be a parent? From the bestselling author of The Last Days of UsIn one split second, Aidan Whelan's perfect world is changed forever when his wife Rowan and three-year-old daughter Milly are involved in a tragic accident.Helena O'Herlihy and her husband James have been struggling in their marriage but a knock on the door
... Read more
Audiobook

Learn German for Kids: Learning German for Children & Beginners Has Never Been Easier Before! Have Fun Whilst Learning Fantastic Exercises for Accurate Pronunciations, Daily Used Phrases, & Vocabulary!

by Pro Language Learning ...

Narrated by Pro Language Learning ...

Unabridged

1 hour 44 min

Is Your Child Struggling with German? Help Them Improve Their German Speaking Skills With Fun Games & Captivating Activities!Would you like your child to:• Get one step closer to speaking German fluently?• Learn proper and accurate German pronunciation?• Master German-speaking, listening, and grammar skills?But you:• Never learned a single German word in your life?• Are too busy to think of the ... Read more

€10.79 or Free with Kobo Plus

Is Your Child Struggling with German? Help Them Improve Their German Speaking Skills With Fun Games & Captivating Activities!Would you like your child to:• Get one step closer to speaking German fluently?• Learn proper and accurate German pronunciation?• Master German-speaking, listening, and grammar skills?But you:• Never learned a single German word in your life?• Are too busy to think of the
... Read more
Audiobook

English Pronunciation Secrets

The Game-Changing Guide to Mastering the General American Accent

by Rebecca Bower ...

Narrated by Rebecca Bower ...

Series Audiobook 1 - English Pronunciation Secrets
Unabridged

32 hours 23 min

Are you looking for that one English pronunciation guide that has it all?Well, you found it!… Plus, it's NOT your typical boring English pronunciation workbook.You're frustrated with not being understood. You're tired of shying away from conversations and presentations that keep you from making significant gains in your career and making connections in your social life.This guide is a culmination ... Read more

€48.81 or Free with Kobo Plus

Are you looking for that one English pronunciation guide that has it all?Well, you found it!… Plus, it's NOT your typical boring English pronunciation workbook.You're frustrated with not being understood. You're tired of shying away from conversations and presentations that keep you from making significant gains in your career and making connections in your social life.This guide is a culmination
... Read more
Audiobook

Learn Hungarian Bundle - The Complete Beginner to Advanced Course (Levels 1-5)

by HungarianPod101.com ...

Narrated by HungarianPod101.com ...

Series series The Complete Beginner to Advanced Course (Levels 1-5)
Unabridged

28 hours 21 min

Want to learn and speak Hungarian?And go from zero and all the way up to conversational fluency?The bad news? No single audiobook will get you to fluency.The good news? A bundle of audiobooks will.Introducing: Learn Hungarian Bundle - The Complete Beginner to Advanced Course (Levels 1-5).This complete Audiobook bundle is a fast, fun, and easy way to pick up Hungarian… regardless of your age or ... Read more

€109.40 or Free with Kobo Plus

Want to learn and speak Hungarian?And go from zero and all the way up to conversational fluency?The bad news? No single audiobook will get you to fluency.The good news? A bundle of audiobooks will.Introducing: Learn Hungarian Bundle - The Complete Beginner to Advanced Course (Levels 1-5).This complete Audiobook bundle is a fast, fun, and easy way to pick up Hungarian… regardless of your age or
... Read more
Audiobook

The Whole-Brain Child

12 Proven Strategies to Nurture Your Child's Developing Mind

by Dr. Tina Payne Bryson, Dr. Daniel Siegel ...

Narrated by Dr. Tina Payne Bryson, Dr. Daniel Siegel ...

Unabridged

6 hours 14 min

In this pioneering, practical book for parents, neuroscientist Daniel J. Siegel and parenting expert Tina Payne Bryson explain the new science of how a child's brain is wired and how it matures. Different parts of a child's brain develop at different speeds and understanding these differences can help you turn any outburst, argument, or fear into a chance to integrate your child's brain and raise ... Read more

€23.56

In this pioneering, practical book for parents, neuroscientist Daniel J. Siegel and parenting expert Tina Payne Bryson explain the new science of how a child's brain is wired and how it matures. Different parts of a child's brain develop at different speeds and understanding these differences can help you turn any outburst, argument, or fear into a chance to integrate your child's brain and raise
... Read more
Audiobook

Think Faster, Talk Smarter

A powerful, practical guide to speaking successfully when you're put on the spot

by Matt Abrahams ...

Narrated by Matt Abrahams ...

Unabridged

7 hours 11 min

**Read by the author.'Filled with practical, tactical advice, this book is indispensable' – Kim Scott, bestselling author of Radical CandorStanford lecturer and host of the #1 business podcast Think Fast, Talk Smart, Matt Abrahams, reveals the secrets to finding the right words when it counts.**Communication is crucial to success in life and business. However, it is not just big speeches that ... Read more

€14.92

**Read by the author.'Filled with practical, tactical advice, this book is indispensable' – Kim Scott, bestselling author of Radical CandorStanford lecturer and host of the #1 business podcast Think Fast, Talk Smart, Matt Abrahams, reveals the secrets to finding the right words when it counts.**Communication is crucial to success in life and business. However, it is not just big speeches that
... Read more
Audiobook

Pimsleur Irish Level 1 Lesson 1

Learn to Speak and Understand Irish (Gaelic) with Pimsleur Language Programs

by Pimsleur ...

Narrated by Pimsleur ...

Series Audiobook 1 - Pimsleur Digital
Unabridged

43 min

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Compact Irish Phase 1, Unit 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full ... Read more

Free

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Compact Irish Phase 1, Unit 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full
... Read more
Audiobook

Pimsleur Spanish Level 1 Lesson 1

Learn to Speak, Understand, and Read Spanish with Pimsleur Language Programs

by Pimsleur ...

Narrated by Pimsleur ...

Series Audiobook 1 - Pimsleur Digital
Unabridged

31 min

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Spanish Level 1, Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full ... Read more

Free

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Spanish Level 1, Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full
... Read more
Audiobook

Let me tell you a story

Introducing Kobo Audiobooks

by Rakuten Kobo ...

Narrated by Jim Dale ...

Unabridged

3 min

Let me tell you a story. Do you remember when you first fell in love with reading? Well you weren't really reading, were you? No, your passion for books began quite another way. It was listening, wasn't it? To a story. Yes; your love of reading got started when you were being read to. Could there be any six words that have more anticipation behind them than: "Let me tell you a story."Introducing ... Read more

Free

Let me tell you a story. Do you remember when you first fell in love with reading? Well you weren't really reading, were you? No, your passion for books began quite another way. It was listening, wasn't it? To a story. Yes; your love of reading got started when you were being read to. Could there be any six words that have more anticipation behind them than: "Let me tell you a story."Introducing
... Read more
Audiobook

Hello World

How to be Human in the Age of the Machine

by Hannah Fry ...

Narrated by Hannah Fry ...

Unabridged

6 hours 51 min

Random House presents the audiobook edition of Hello World, written and read by Hannah Fry.You are accused of a crime. Who would you rather determined your fate – a human or an algorithm?An algorithm is more consistent and less prone to error of judgement. Yet a human can look you in the eye before passing sentence.You need a liver transplant to save your life. Who would you want in charge of ... Read more

€13.79

Random House presents the audiobook edition of Hello World, written and read by Hannah Fry.You are accused of a crime. Who would you rather determined your fate – a human or an algorithm?An algorithm is more consistent and less prone to error of judgement. Yet a human can look you in the eye before passing sentence.You need a liver transplant to save your life. Who would you want in charge of
... Read more
Audiobook

Breath

Improve your health and wellbeing by discovering the lost art of breathing

by James Nestor ...

Narrated by James Nestor ...

Unabridged

7 hours 56 min

Brought to you by Penguin. Narrated by James Nestor.THE INTERNATIONAL BESTSELLER'Who would have thought something as simple as changing the way we breathe could be so revolutionary for our health, from snoring to allergies to immunity? A fascinating book, full of dazzling revelations' Dr Rangan ChatterjeeNo matter what you eat, how much you exercise, how skinny or young or wise you are, none of it ... Read more

€14.93

Brought to you by Penguin. Narrated by James Nestor.THE INTERNATIONAL BESTSELLER'Who would have thought something as simple as changing the way we breathe could be so revolutionary for our health, from snoring to allergies to immunity? A fascinating book, full of dazzling revelations' Dr Rangan ChatterjeeNo matter what you eat, how much you exercise, how skinny or young or wise you are, none of it
... Read more
Audiobook

The Ode Less Travelled

Unlocking the Poet Within

by Stephen Fry ...

Narrated by Stephen Fry ...

Unabridged

9 hours 2 min

Random House presents the unabridged, downloadable audiobook edition of The Ode Less Travelled, written and read by Stephen Fry.Stephen Fry believes that if you can speak and read English you can write poetry. But it is no fun if you don't know where to start or have been led to believe that Anything Goes.Stephen, who has long written poems, and indeed has written long poems, for his own private ... Read more

€11.49

Random House presents the unabridged, downloadable audiobook edition of The Ode Less Travelled, written and read by Stephen Fry.Stephen Fry believes that if you can speak and read English you can write poetry. But it is no fun if you don't know where to start or have been led to believe that Anything Goes.Stephen, who has long written poems, and indeed has written long poems, for his own private
... Read more
Audiobook

Next Steps in Spanish with Paul Noble for Intermediate Learners – Complete Course

Spanish Made Easy with Your 1 million-best-selling Personal Language Coach

by Paul Noble ...

Narrated by Paul Noble ...

Unabridged

7 hours 41 min

Quick, easy and effortless.Welcome to Learn with Paul Noble – a unique, tried and tested language learning method that has been used by millions. You'll be speaking Spanish fluently and confidently in no time at all.This course covers both European and Latin American Spanish.Take your Spanish to the next level with Paul Noble's simple, relaxed approach to learning that has been proven to succeed ... Read more

€26.99

Quick, easy and effortless.Welcome to Learn with Paul Noble – a unique, tried and tested language learning method that has been used by millions. You'll be speaking Spanish fluently and confidently in no time at all.This course covers both European and Latin American Spanish.Take your Spanish to the next level with Paul Noble's simple, relaxed approach to learning that has been proven to succeed
... Read more
Audiobook

The Coddling of the American Mind

How Good Intentions and Bad Ideas Are Setting Up a Generation for Failure

by Jonathan Haidt, Greg Lukianoff ...

Narrated by Jonathan Haidt ...

Unabridged

10 hours 6 min

Penguin presents the audiobook edition of The Coddling of the America Mind by Jonathan Haidt and Greg Lukianoff, read by Jonathan Haidt.What doesn't kill you makes you weakerAlways trust your feelingsLife is a battle between good people and evil peopleThese three Great Untruths contradict basic psychological principles about well-being, as well as ancient wisdom from many cu... ... Read more

€13.79

Penguin presents the audiobook edition of The Coddling of the America Mind by Jonathan Haidt and Greg Lukianoff, read by Jonathan Haidt.What doesn't kill you makes you weakerAlways trust your feelingsLife is a battle between good people and evil peopleThese three Great Untruths contradict basic psychological principles about well-being, as well as ancient wisdom from many cu...
... Read more
Audiobook

Pimsleur Korean Level 1 Lesson 1

Learn to Speak and Understand Korean with Pimsleur Language Programs

by Pimsleur ...

Narrated by Pimsleur ...

Series Audiobook 1 - Pimsleur Digital
Unabridged

29 min

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Korean Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full practice for all ... Read more

Free

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Korean Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full practice for all
... Read more
Audiobook

Pimsleur Portuguese (European) Level 1 Lessons 1

Learn to Speak and Understand European Portuguese with Pimsleur Language Programs

by Pimsleur ...

Narrated by Pimsleur ...

Series Audiobook 1 - Pimsleur Digital
Unabridged

28 min

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Portuguese (European) Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full ... Read more

Free

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. Portuguese (European) Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full
... Read more
Audiobook

Spanish Language: 3 in 1 Bundle

Spanish for Beginners, Spanish Short Stories, Spanish Language Lessons

by Sergio Rodriguez ...

Narrated by Zac Aleman ...

Unabridged

12 hours 16 min

Hola!If you are looking to learn Spanish in a fast, simple, and easy way without entering a classroom, then you have chosen the perfect audiobook. Spanish Language is the perfect guide for beginners that allows you to learn Spanish while in your car or working out with the purpose to reach a native-level fluency in no time.Here's what you'll learn from the Spanish for Beginners audiobook:The ... Read more

€16.79 or Free with Kobo Plus

Hola!If you are looking to learn Spanish in a fast, simple, and easy way without entering a classroom, then you have chosen the perfect audiobook. Spanish Language is the perfect guide for beginners that allows you to learn Spanish while in your car or working out with the purpose to reach a native-level fluency in no time.Here's what you'll learn from the Spanish for Beginners audiobook:The
... Read more
Audiobook

Pimsleur French Level 1 Lesson 1

Learn to Speak and Understand French with Pimsleur Language Programs

by Pimsleur ...

Narrated by Pimsleur ...

Series Audiobook 1 - Pimsleur Digital
Unabridged

31 min

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. French Level 1, Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full ... Read more

Free

The Pimsleur® Method has worked for millions all over the world. Totally portable; simple to use; Pimsleur works so you don’t have to. French Level 1, Lesson 1 contains 30 minutes of spoken language practice, with an introductory conversation, and isolated vocabulary and structures. Detailed instructions enable you to understand and participate in the conversation. The lesson contains full
... Read more
Audiobook

The Circadian Code

Lose weight, supercharge your energy and sleep well every night

by Dr Satchin Panda ...

Narrated by John Sackville ...

Unabridged

8 hours 54 min

Penguin presents the audiobook edition of The Circadian Code written by Dr Satchin Panda, read by John Sackville.Change your daily routine, transform your health.Circadian rhythms are biological processes or clocks that exist in each one of our cells. Programmed to turn genes on or off at different times of the day or night, they influence every aspect of our health from weight and energy levels ... Read more

€14.93

Penguin presents the audiobook edition of The Circadian Code written by Dr Satchin Panda, read by John Sackville.Change your daily routine, transform your health.Circadian rhythms are biological processes or clocks that exist in each one of our cells. Programmed to turn genes on or off at different times of the day or night, they influence every aspect of our health from weight and energy levels
... Read more
Audiobook

Make It Stick

The Science of Successful Learning

by Peter C. Brown, Henry L. Roediger III, Mark A. McDaniel ...

Narrated by Qarie Marshall ...

Unabridged

8 hours 34 min

To most of us, learning something 'the hard way' implies wasted time and effort. Good teaching, we believe, should be creatively tailored to the different learning styles of students and should use strategies that make learning easier. Make It Stick turns fashionable ideas like these on their head. Many common study habits and practice routines turn out to be counterproductive. Underlining and ... Read more

€21.03

To most of us, learning something 'the hard way' implies wasted time and effort. Good teaching, we believe, should be creatively tailored to the different learning styles of students and should use strategies that make learning easier. Make It Stick turns fashionable ideas like these on their head. Many common study habits and practice routines turn out to be counterproductive. Underlining and
... Read more
Audiobook

History of Ireland: An Enthralling Overview of Major Events and Figures in Irish History

by Billy Wellman ...

Narrated by Colin Fluxman ...

Unabridged

3 hours 11 min

Discover Irish History: A Journey Through Time and MythAre you captivated by the mysteries of ancient civilizations and the unfathomable depths of cultural heritage? Dive into the heart of Ireland, an island whose history began long before it became part of the British Empire. This audiobook is your gateway to a land often shrouded in mystery and legend.What Awaits You Inside:Neolithic Marvels: ... Read more

€12.58 or Free with Kobo Plus

Discover Irish History: A Journey Through Time and MythAre you captivated by the mysteries of ancient civilizations and the unfathomable depths of cultural heritage? Dive into the heart of Ireland, an island whose history began long before it became part of the British Empire. This audiobook is your gateway to a land often shrouded in mystery and legend.What Awaits You Inside:Neolithic Marvels:
... Read more
Audiobook

The Ransom of Red Chief

Mandarin Companion Graded Readers Level 1

by John Pasden ...

Narrated by Xiuye Zhang ...

Series Audiobook 1 - Mandarin Companion
Unabridged

1 hour 6 min

Trying to make some fast cash, two small-time crooks devise a plan to kidnap the son of a wealthy family in a village and hold him for ransom. When the kidnapped boy pulls out his Hong Hou (“Red Monkey”) costume, the two burglars realize they may be in for more than they planned. As their ransom notes remain unanswered and their scheme starts to drag on, the two crooks find out for themselves how ... Read more

€3.00

Trying to make some fast cash, two small-time crooks devise a plan to kidnap the son of a wealthy family in a village and hold him for ransom. When the kidnapped boy pulls out his Hong Hou (“Red Monkey”) costume, the two burglars realize they may be in for more than they planned. As their ransom notes remain unanswered and their scheme starts to drag on, the two crooks find out for themselves how
... Read more

Rakuten Kobo

eReaders

Apps

Accessories

Shopping Cart

You're getting the VIP treatment!

Your Shopping Cart is empty

Available:

1 audiobook monthly

+ FREE 30-day trial

Available:

1 audiobook monthly

+ FREE 30-day trial

Recommended For You

Reference & Language Audiobooks

The Wedding People

A Thread of Violence

A Mother's Secret

Learn German for Kids: Learning German for Children & Beginners Has Never Been Easier Before! Have Fun Whilst Learning Fantastic Exercises for Accurate Pronunciations, Daily Used Phrases, & Vocabulary!

English Pronunciation Secrets

Learn Hungarian Bundle - The Complete Beginner to Advanced Course (Levels 1-5)

The Whole-Brain Child

Think Faster, Talk Smarter

Pimsleur Irish Level 1 Lesson 1

Pimsleur Spanish Level 1 Lesson 1

Let me tell you a story

Hello World

Breath

The Ode Less Travelled

Next Steps in Spanish with Paul Noble for Intermediate Learners – Complete Course

The Coddling of the American Mind

Pimsleur Korean Level 1 Lesson 1

Pimsleur Portuguese (European) Level 1 Lessons 1

Spanish Language: 3 in 1 Bundle

Pimsleur French Level 1 Lesson 1

The Circadian Code

Make It Stick

History of Ireland: An Enthralling Overview of Major Events and Figures in Irish History

The Ransom of Red Chief