Cita APA (7th ed.)

(2003). GRE. Powerprep Software. Version 3.1: Test Preparation for the GRE General Test. Educational Testing Service.

Cita Chicago (17th ed.)

GRE. Powerprep Software. Version 3.1: Test Preparation for the GRE General Test. Princeton, NJ: Educational Testing Service, 2003.

Cita MLA (9th ed.)

GRE. Powerprep Software. Version 3.1: Test Preparation for the GRE General Test. Educational Testing Service, 2003.