Well, in order to help you prepare for your GRE Exam you will need a few reference books specially revised by the experts of the GRE.
Interested candidates can buy the book Online here. Please check for the available books below.
Kaplan GRE Premier 2013 - Includes 5 Computer Adaptive Practice Tests and a DVD .
Kaplan New GRE - Includes Strategies, Practice and Review 2013 with Computer Adaptive Practice Test and,
For more details on GRE exam, pattern, and more books keep visiting.