Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.