Columbia University Press, Northen, H., & Roberts, R. W. (1976). Theories of social work with groups. Columbia University Press.
Chicago Style (17th ed.) CitationColumbia University Press, Helen Northen, and Robert W. Roberts. Theories of Social Work with Groups. New York: Columbia University Press, 1976.
MLA (8th ed.) CitationColumbia University Press, et al. Theories of Social Work with Groups. Columbia University Press, 1976.
Warning: These citations may not always be 100% accurate.