Gaya APA

Council, G, M, A. (2005). The official guide for GMAT review : the only study guide with 800 real GMAT questions (11 ed.). USA: GMAC.

Gaya MLA

Council, Graduate, Management, Admission. "The official guide for GMAT review : the only study guide with 800 real GMAT questions". 11 ed. USA: GMAC, 2005. Text.