Corey, M. S., & Corey, G. (2006). Groups: Process and practice. Belmont, CA: Thomson/Brooks/Cole.
Čikaški stil citiranjaCorey, Marianne Schneider, i Gerald Corey. Groups: Process and Practice. Belmont, CA: Thomson/Brooks/Cole, 2006.
MLA način citiranjaCorey, Marianne Schneider, i Gerald Corey. Groups: Process and Practice. Belmont, CA: Thomson/Brooks/Cole, 2006.
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