Shulman, L. (1984). The skills of helping: Individuals and groups (2nd ed.). F.E.Peacock Publishers.
Citace podle Chicago (17th ed.)Shulman, Lawrence. The Skills of Helping: Individuals and Groups. 2nd ed. Itasca,: F.E.Peacock Publishers, 1984.
Citace podle MLA (8th ed.)Shulman, Lawrence. The Skills of Helping: Individuals and Groups. 2nd ed. F.E.Peacock Publishers, 1984.
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