Klopf, D. W. (1985). Interacting in groups: Theory and practice (2ª ed.). Norton.
Tohutoru Kātū ChicagoKlopf, Donald W. Interacting in Groups: Theory and Practice. 2ª ed. Norton, 1985.
Tohutoro MLAKlopf, Donald W. Interacting in Groups: Theory and Practice. 2ª ed. Norton, 1985.
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