APA aipamena

Corey, G. (1992). Group techniques (2nd ed.). Brooks/Cole.

Chicago Style aipamena

Corey, Gerald. Group Techniques. 2nd ed. Pacific Grove, Calif: Brooks/Cole, 1992.

MLA aipamena

Corey, Gerald. Group Techniques. 2nd ed. Brooks/Cole, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.