Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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