APA (7th ed.) Citation

Princeton Review (Firm). (2017). Crash course for the GRE (6th edition.). Penguin Random House.

Chicago Style (17th ed.) Citation

Princeton Review (Firm). Crash Course for the GRE. 6th edition. New York: Penguin Random House, 2017.

MLA (8th ed.) Citation

Princeton Review (Firm). Crash Course for the GRE. 6th edition. Penguin Random House, 2017.

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