Cita APA (7th ed.)

Corey, G. (2016). Theory & practice of group counseling (Ninth edition.). Cengage Learning.

Cita Chicago (17th ed.)

Corey, Gerald. Theory & Practice of Group Counseling. Ninth edition. Boston, Massachusetts: Cengage Learning, 2016.

Cita MLA (9th ed.)

Corey, Gerald. Theory & Practice of Group Counseling. Ninth edition. Cengage Learning, 2016.