Cita APA (7th ed.)

Berry, J. M. (2009). The interest group society (5th ed.). Pearson Education, Inc.

Cita Chicago (17th ed.)

Berry, Jeffrey M. The Interest Group Society. 5th ed. New York, NY: Pearson Education, Inc, 2009.

Cita MLA (9th ed.)

Berry, Jeffrey M. The Interest Group Society. 5th ed. Pearson Education, Inc, 2009.