Cita APA

Shulman, L. 1., & Shulman, L. 1. (1992). The skills of helping: Individuals, families, and groups (3. edition.). Itasca, Illinois: F.E. Peacock Publishers, Inc..

Citación estilo Chicago

Shulman, Lawrence 1937-, y Lawrence 1937- Shulman. The Skills of Helping: Individuals, Families, and Groups. 3. edition. Itasca, Illinois: F.E. Peacock Publishers, Inc., 1992.

Cita MLA

Shulman, Lawrence 1937-, y Lawrence 1937- Shulman. The Skills of Helping: Individuals, Families, and Groups. 3. edition. Itasca, Illinois: F.E. Peacock Publishers, Inc., 1992.