Cita APA (7a ed.)

Goodman, E. (2008). Guide to the Gre Test. Spark Notes Publishing.

Cita Chicago Style (17a ed.)

Goodman, Eric. Guide to the Gre Test. New York, NY: Spark Notes Publishing, 2008.

Cita MLA (9a ed.)

Goodman, Eric. Guide to the Gre Test. Spark Notes Publishing, 2008.