Cita APA (7a ed.)

Williamson, M. A. 1. (1929). The social worker in a group. Harper.

Cita Chicago Style (17a ed.)

Williamson, Margaretta A. 1891. The Social Worker in a Group. New York: Harper, 1929.

Cita MLA (9a ed.)

Williamson, Margaretta A. 1891. The Social Worker in a Group. Harper, 1929.