APA استشهاد

Carr, J., & Yule, W. (1980). Behaviour modification for people with mental handicaps (2.).

استشهاد بنمط شيكاغو

Carr, Janet, و William Yule. Behaviour Modification for People with Mental Handicaps. 2. London, Croom Helm, 1980.

MLA استشهاد

Carr, Janet, و William Yule. Behaviour Modification for People with Mental Handicaps. 2. 1980.