Green,S G. (2006). Barron's How to prepare For GRE,16th ed (16th ed.). Galgotia.
Cita Chicago Style (17a ed.)Green,S G. Barron's How to Prepare For GRE,16th Ed. 16th ed. New Delhi: Galgotia, 2006.
Cita MLA (9a ed.)Green,S G. Barron's How to Prepare For GRE,16th Ed. 16th ed. Galgotia, 2006.
Precaución: Estas citas no son 100% exactas.