Citazione APA

Green, S. W., & Wolf, I. K. (2008). Barron's GRE 2008 (17th ed.). Galgotia Publications.

Stile di citazione Chicago

Green, Sharon Weiner, e Ira K. Wolf. Barron's GRE 2008. 17th ed. New Delhi: Galgotia Publications, 2008.

Citazione MLA

Green, Sharon Weiner, e Ira K. Wolf. Barron's GRE 2008. 17th ed. Galgotia Publications, 2008.