Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.