Ok, here I am suggesting you the best books of Test of English as a Foreign Language TOEFL exam

TOEFL exam books

OFFICIAL GUIDE TO TOEFL TEST (English) 4th Edition



Cambridge Preparation For The Toefl Test (English) 4th Edition



Cracking the TOEFL iBT with Audio CD, 2015 Edition



The Official Guide to the TOEFL IBT (English) 3rd Edition




Kaplan TOEFL Ibt Premier 2014-2015 with 4 Practice Tests



Barron's TOEFL iBT 2014 with CD (English) 14th Edition




TOEFL 2016 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