10 highly recommended TOEFL prep books

Here are 10 highly recommended TOEFL prep books:
1. **"Official Guide to the TOEFL iBT Test"** - **Publisher:** Educational Testing Service (ETS) - **Description:** This official guide from ETS provides comprehensive information, practice questions, and full-length practice tests for the TOEFL iBT test.
2. **"Kaplan TOEFL iBT Prep Plus 2021-2022"** - **Publisher:** Kaplan Publishing - **Description:** Kaplan's TOEFL iBT Prep Plus book includes four full-length practice tests, online audio tracks, video lessons, and expert strategies for all sections of the TOEFL exam.
3. **"Barron's TOEFL iBT with MP3 audio CDs"** - **Publisher:** Barron's Educational Series - **Description:** Barron's TOEFL iBT book includes eight full-length practice tests, audio tracks for listening practice, skill-building exercises, and strategies for each section of the TOEFL exam.
4. **"The Complete Guide to the TOEFL Test: iBT Edition"** - **Publisher:** Heinle ELT - **Description:** This comprehensive guide includes a full-length TOEFL iBT practice test, skill-building exercises, audio tracks for listening practice, and strategies for all sections of the exam.
5. **"Delta's Key to the TOEFL iBT: Advanced Skill Practice"** - **Publisher:** Delta Publishing Company - **Description:** This book focuses on advanced skill practice for the TOEFL iBT test, including grammar, vocabulary, reading, listening, speaking, and writing exercises.
6. **"McGraw-Hill Education: Essential TOEFL Vocabulary"** - **Publisher:** McGraw-Hill Education - **Description:** This book includes more than 500 essential TOEFL vocabulary words with definitions, example sentences, and exercises to help students improve their vocabulary skills for the TOEFL exam.
7. **"Cracking the TOEFL iBT with Audio CD"** - **Publisher:** Princeton Review - **Description:** Princeton Review's TOEFL iBT book includes full-length practice tests, audio tracks for listening practice, skill-building exercises, and strategies for each section of the TOEFL exam.
8. **"Cambridge Preparation for the TOEFL Test"** - **Publisher:** Cambridge University Press - **Description:** This comprehensive guide includes a full-length TOEFL iBT practice test, skill-building exercises, audio tracks for listening practice, and strategies for all sections of the exam.
9. **"Delta's Key to the Next Generation TOEFL Test: Advanced Skill Practice"** - **Publisher:** Delta Publishing Company - **Description:** This book focuses on advanced skill practice for the Next Generation TOEFL test, including grammar, vocabulary, reading, listening, speaking, and writing exercises.
10. **"TOEFL iBT Superpack"** - **Publisher:** Barron's Educational Series - **Description:** This superpack includes Barron's TOEFL iBT prep book, practice tests, audio CDs, and online resources, providing comprehensive preparation for the TOEFL iBT test.

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