Jeffrey A. Kottler. (1994). Advanced group leadership. Pacific Grove, CA: Brooks/Cole.
Čikaški stil citiranjaJeffrey A. Kottler. Advanced Group Leadership. Pacific Grove, CA: Brooks/Cole, 1994.
MLA način citiranjaJeffrey A. Kottler. Advanced Group Leadership. Pacific Grove, CA: Brooks/Cole, 1994.
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