APA (7th ed.) Citation

Corey, M. S., & Corey, G. (2011). Becoming a helper (6th ed.). Brooks/Cole Cengage Learning.

Chicago Style (17th ed.) Citation

Corey, Marianne Schneider, and Gerald Corey. Becoming a Helper. 6th ed. Belmont, Calif: Brooks/Cole Cengage Learning, 2011.

MLA (9th ed.) Citation

Corey, Marianne Schneider, and Gerald Corey. Becoming a Helper. 6th ed. Brooks/Cole Cengage Learning, 2011.