Educational Testing Service & Graduate Management Admission Council. (1992). The Official guide for GMAT review. GMAT Program Direction Office, Educational Testing Service.
Chicago-referens (17:e uppl.)Educational Testing Service och Graduate Management Admission Council. The Official Guide for GMAT Review. Princeton, New Jersey: GMAT Program Direction Office, Educational Testing Service, 1992.
MLA-referens (9:e uppl.)Educational Testing Service och Graduate Management Admission Council. The Official Guide for GMAT Review. GMAT Program Direction Office, Educational Testing Service, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.