The following books are commonly used in preparation for TOEFL.(click on any image to buy securely from Amazon)

TOEFL Test Preparation Kit (Book & CD-ROM) This kit provides 14 hours of practice materials with 980 questions from previously administered TOEFL tests.

Barron's How to Prepare for the Computer-Based Toefl Essay A total of 133 model essays are presented to point out the do's and don'ts of successful essay composition in English.

Kaplan TOEFL Workbook with 3 Audio CDs Provides a complete review of all the material on both the computer-based and paper-based TOEFL exam, plus targeted practice for all sections of the test .

Rea's Testbuster for the Toefl Cbt by Richard X. Balley, Carol A. Gavin, Joyce, Ph.D. Penfield, Sundari Seetharaman, Neelima Shukla, Ramya Subramanian, Lorraine H. Teller

Cambridge Preparation for the TOEFL® Test Book with CD-ROM Includes a CD-ROM component containing seven complete practice tests. Learners may take the tests in study mode, which generates feedback on their responses, or in test mode, which simulates the experience of taking the exam by computer.