Dyfyniad APA

Corey, G. (2012). Theory & practice of group counseling (8th ed.). Brooks/Cole, Cengage Learning.

Dyfyniad Arddull Chicago

Corey, Gerald. Theory & Practice of Group Counseling. 8th ed. Belmont, CA: Brooks/Cole, Cengage Learning, 2012.

Dyfyniad MLA

Corey, Gerald. Theory & Practice of Group Counseling. 8th ed. Brooks/Cole, Cengage Learning, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.