APA (7th ed.) Citation

Kaplan Test Prep and Admissions. (2008). Portable GMAT. Kaplan Pub.

Chicago Style (17th ed.) Citation

Kaplan Test Prep and Admissions. Portable GMAT. New York: Kaplan Pub, 2008.

MLA (8th ed.) Citation

Kaplan Test Prep and Admissions. Portable GMAT. Kaplan Pub, 2008.

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