Cita APA (7th ed.)

Corey, G., Corey, M. S., Callanan, P., & Russell, J. M. (2015). Group techniques (Fourth edition.). Brooks/Cole, Cengage Learning.

Cita Chicago (17th ed.)

Corey, Gerald, Marianne Schneider Corey, Patrick Callanan, i J. Michael Russell. Group Techniques. Fourth edition. Stamford, CT: Brooks/Cole, Cengage Learning, 2015.

Cita MLA (9th ed.)

Corey, Gerald, et al. Group Techniques. Fourth edition. Brooks/Cole, Cengage Learning, 2015.