Ok, here I am suggesting you some best books of Test of English as a Foreign Language TOEFL exam. I think it will definitely help you.

TOEFL exam Books

Official Guide to the TOEFL Test With CD-ROM




Barron’s TOEFL iBT Superpack




Speaking and Writing Strategies for TOEFL iBT (Book & Audio CD)




TOEFL iBT High Score System




Practice Exercises for the TOEFL with MP3 CD



Cambridge Preparation for the TOEFL




Kaplan TOEFL iBT Premier 2016-2017





TOEFL Test pattern-

Section Time Limit Questions
Reading 60–80 minutes 36–56 questions
Listening 60–90 minutes 34–51 questions
Speaking 20 minutes 6 tasks
Writing 50 minutes 2 tasks