Cita APA (7th ed.)

Educational Testing Service & Graduate Management Admission Council. (1992). The Official guide for GMAT review. GMAT Program Direction Office, Educational Testing Service.

Cita Chicago (17th ed.)

Educational Testing Service i Graduate Management Admission Council. The Official Guide for GMAT Review. Princeton, New Jersey: GMAT Program Direction Office, Educational Testing Service, 1992.

Cita MLA (9th ed.)

Educational Testing Service i Graduate Management Admission Council. The Official Guide for GMAT Review. GMAT Program Direction Office, Educational Testing Service, 1992.