Gaya APA

Jaffe, E, D., Hilbert, S. (2007). Pass key to the GMAT , Fifth edition . USA: Barron's Educational Series. Inc.

Gaya MLA

Jaffe, Eugene, D.., Hilbert, Stephen. "Pass key to the GMAT , Fifth edition". USA: Barron's Educational Series. Inc, 2007. Teks (Text).