Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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