English as A Second Language: TOEFL Examination

The Official Guide to TOEFL Test by Educational Testing Service

Barron's Essential Words for the TOEFL by Steven Matthiesen

Outsmart the TOEFL by Pamela Sharpe

Practice Exercises for TOEFL by Pamela Sharpe

TOEFL IBT Plus Typing Strategies by Bruce Stirling

Kaplan TOEFL IBT Premier by Kaplan Publishing

Cracking TOEFL IBT by Rob Franek

TOEFL IBT Prep Plus by Kaplan Test Prep