Cita APA (7a ed.)

Yule, W., & Carr, J. H. (1987). Behaviour modification for people with mental handicaps (2nd ed.). Croom Helm.

Cita Chicago Style (17a ed.)

Yule, William, y Janet H. Carr. Behaviour Modification for People with Mental Handicaps. 2nd ed. London [etc.]: Croom Helm, 1987.

Cita MLA (9a ed.)

Yule, William, y Janet H. Carr. Behaviour Modification for People with Mental Handicaps. 2nd ed. Croom Helm, 1987.