Napier, R. W. (1983). Making groups work: A guide for group leaders. Houghton Mifflin.
Chicago-čujuhus (17. p.)Napier, Rodney W. Making Groups Work: A Guide for Group Leaders. Houghton Mifflin, 1983.
MLA-čujuhus (9. p.)Napier, Rodney W. Making Groups Work: A Guide for Group Leaders. Houghton Mifflin, 1983.
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