APA (7th ed.) Citation

Weber, K. (1999). The unofficial guide to the GRE test (2000 ed.). Macmillan USA.

Chicago Style (17th ed.) Citation

Weber, Karl. The Unofficial Guide to the GRE Test. 2000 ed. New York: Macmillan USA, 1999.

MLA (9th ed.) Citation

Weber, Karl. The Unofficial Guide to the GRE Test. 2000 ed. Macmillan USA, 1999.