Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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