APA aipamena

Kaplan, Inc. (2012). New GMAT essentials 2013. Kaplan Pub.

Chicago Style aipamena

Kaplan, Inc. New GMAT Essentials 2013. New York: Kaplan Pub, 2012.

MLA aipamena

Kaplan, Inc. New GMAT Essentials 2013. Kaplan Pub, 2012.