Cita APA (7a ed.)

Ellis, R., & Whittington, D. (1986). A guide to social skill training. Croom Helm [etc.].

Cita Chicago Style (17a ed.)

Ellis, Roger, y Dorothy Whittington. A Guide to Social Skill Training. London [etc.]: Croom Helm [etc.], 1986.

Cita MLA (9a ed.)

Ellis, Roger, y Dorothy Whittington. A Guide to Social Skill Training. Croom Helm [etc.], 1986.