Παραπομπή σε μορφή APA (7η εκδ.)

Columbia University Press, Northen, H., & Roberts, R. W. (1976). Theories of social work with groups. Columbia University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Columbia University Press, Helen Northen, και Robert W. Roberts. Theories of Social Work with Groups. New York: Columbia University Press, 1976.

Παραπομπή σε μορφή MLA (8th εκδ.)

Columbia University Press, et al. Theories of Social Work with Groups. Columbia University Press, 1976.