Dyfyniad APA

Corey, M. S. 1., & Corey, G. (2007). Becoming a helper (5th ed.). Belmont, CA: Thomson Higher Education.

Dyfyniad Arddull Chicago

Corey, Marianne Schneider 1942-, và Gerald Corey. Becoming a Helper. 5th ed. Belmont, CA: Thomson Higher Education, 2007.

Dyfyniad MLA

Corey, Marianne Schneider 1942-, và Gerald Corey. Becoming a Helper. 5th ed. Belmont, CA: Thomson Higher Education, 2007.

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