APA

Gitterman A., Salmon R., . (2009). Encyclopedia of social work with groups. New York: Routledge.

Chicago

Gitterman Alex, Salmon Robert, . 2009. Encyclopedia of social work with groups. New York: Routledge.

Harvard

Gitterman A., Salmon R., . (2009). Encyclopedia of social work with groups. New York: Routledge.

MLA

Gitterman Alex, Salmon Robert, . Encyclopedia of social work with groups. New York: Routledge. 2009.