Cita APA (7a ed.)

Graduate Management Admission Council & Educational Testing Service. (1986). The official guide for GMAT review (9th ed.). ETS.

Cita Chicago Style (17a ed.)

Graduate Management Admission Council y Educational Testing Service. The Official Guide for GMAT Review. 9th ed. Princeton, N.J: ETS, 1986.

Cita MLA (9a ed.)

Graduate Management Admission Council y Educational Testing Service. The Official Guide for GMAT Review. 9th ed. ETS, 1986.