Style de citation APA (7e éd.)

Berg, R. C., Landreth, G. L., & Fall, K. A. (2006). Group counseling: Concepts and procedures (4th ed.). Routledge.

Style de citation Chicago (17e éd.)

Berg, Robert C., Garry L. Landreth, et Kevin A. Fall. Group Counseling: Concepts and Procedures. 4th ed. New York: Routledge, 2006.

Style de citation MLA (9e éd.)

Berg, Robert C., et al. Group Counseling: Concepts and Procedures. 4th ed. Routledge, 2006.