Cita APA (7th ed.)

Corey, M. S., & Corey, G. (1988). Becoming a helper. Brooks/Cole.

Cita Chicago (17th ed.)

Corey, Marianne Schneider, i Gerald Corey. Becoming a Helper. California: Brooks/Cole, 1988.

Cita MLA (9th ed.)

Corey, Marianne Schneider, i Gerald Corey. Becoming a Helper. Brooks/Cole, 1988.