Cita APA

Educational Testing Service, & Educational Testing Service. (2012). The official guide to the GRE® revised general test (2. edition.). New York: McGraw-Hill.

Citación estilo Chicago

Educational Testing Service, y Educational Testing Service. The Official Guide to the GRE® Revised General Test. 2. edition. New York: McGraw-Hill, 2012.

Cita MLA

Educational Testing Service, y Educational Testing Service. The Official Guide to the GRE® Revised General Test. 2. edition. New York: McGraw-Hill, 2012.