Shulman, L. (1984). The skills of helping: Individuals and groups (2nd ed.). F.E.Peacock Publishers.
Chicago-referens (17:e uppl.)Shulman, Lawrence. The Skills of Helping: Individuals and Groups. 2nd ed. Itasca,: F.E.Peacock Publishers, 1984.
MLA-referens (8:e uppl.)Shulman, Lawrence. The Skills of Helping: Individuals and Groups. 2nd ed. F.E.Peacock Publishers, 1984.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.