APA (7th ed.) Citation

Corey, G. (1988). Group techniques (Rev. ed.). Brooks/Cole.

Chicago Style (17th ed.) Citation

Corey, Gerald. Group Techniques. Rev. ed. Pacific Grove, Calif: Brooks/Cole, 1988.

MLA (9th ed.) Citation

Corey, Gerald. Group Techniques. Rev. ed. Brooks/Cole, 1988.