Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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