Παραπομπή APA

Corey, M. S., & Marianne Schneider Corey; Gerald Corey. (2007). Becoming a helper. Belmont, CA: Thomson Higher Education.

Παραπομπή Chicago Style

Corey, Marianne Schneider, και Marianne Schneider Corey; Gerald Corey. Becoming a Helper. Belmont, CA: Thomson Higher Education, 2007.

Παραπομπή MLA

Corey, Marianne Schneider, και Marianne Schneider Corey; Gerald Corey. Becoming a Helper. Belmont, CA: Thomson Higher Education, 2007.

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