Corey, M. S., & Corey, G. (2007). Becoming a helper. Belmont, CA: Thomson Higher Education.
Čikaški stil citiranjaCorey, Marianne Schneider, i Gerald Corey. Becoming a Helper. Belmont, CA: Thomson Higher Education, 2007.
MLA način citiranjaCorey, Marianne Schneider, i Gerald Corey. Becoming a Helper. Belmont, CA: Thomson Higher Education, 2007.
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