APA-referens (7:e uppl.)

Corey, M. S., Corey, G., & Corey, C. (2014). Groups: Process and practice (Ninth edition.). Brooks/Cole, Cengage Learning.

Chicago-referens (17:e uppl.)

Corey, Marianne Schneider, Gerald Corey, och Cindy Corey. Groups: Process and Practice. Ninth edition. Australia: Brooks/Cole, Cengage Learning, 2014.

MLA-referens (9:e uppl.)

Corey, Marianne Schneider, et al. Groups: Process and Practice. Ninth edition. Brooks/Cole, Cengage Learning, 2014.