Shulman, L. (1984). The skills of helping: Individuals and groups (2nd ed.). F.E.Peacock Publishers.
Lua i Stíl Chicago (17ú heag.)Shulman, Lawrence. The Skills of Helping: Individuals and Groups. 2nd ed. Itasca,: F.E.Peacock Publishers, 1984.
Lua MLA (8ú heag.)Shulman, Lawrence. The Skills of Helping: Individuals and Groups. 2nd ed. F.E.Peacock Publishers, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.