APA (7th ed.) Citation

Peterson's (Firm) & ebrary, Inc. (2014). Peterson's master the GMAT 2015 (Twenty-first edition.). Peterson's.

Chicago Style (17th ed.) Citation

Peterson's (Firm) and Inc ebrary. Peterson's Master the GMAT 2015. Twenty-first edition. Albany, New York: Peterson's, 2014.

MLA (9th ed.) Citation

Peterson's (Firm) and Inc ebrary. Peterson's Master the GMAT 2015. Twenty-first edition. Peterson's, 2014.

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