Cita APA (7a ed.)

Clarke, H. I. (1947). Principles and practice of social work. Appleton-Century.

Cita Chicago Style (17a ed.)

Clarke, Helen Isabel. Principles and Practice of Social Work. New York: Appleton-Century, 1947.

Cita MLA (9a ed.)

Clarke, Helen Isabel. Principles and Practice of Social Work. Appleton-Century, 1947.