APA (7th ed.) Citation

(2014). Cracking the GRE premium. Penguin Random House.

Chicago Style (17th ed.) Citation

Cracking the GRE Premium. New York: Penguin Random House, 2014.

MLA (9th ed.) Citation

Cracking the GRE Premium. Penguin Random House, 2014.

Warning: These citations may not always be 100% accurate.