APA (7e ed.) Bronvermelding

SHULMAN, L. (1984). The skills of helping: Individuals and groups.-- Ed.2. F E Peacock Pub.

Chicago (17e ed.) Bronvermelding

SHULMAN, Lawrence. The Skills of Helping: Individuals and Groups.-- Ed.2. Itasca: F E Peacock Pub, 1984.

MLA (9e ed.) Bronvermelding

SHULMAN, Lawrence. The Skills of Helping: Individuals and Groups.-- Ed.2. F E Peacock Pub, 1984.