Dyfyniad APA

Ellis, R., & Whittington, D. (1983). New directions in social skill training. Croom Helm.

Dyfyniad Arddull Chicago

Ellis, Roger, and Dorothy Whittington. New Directions in Social Skill Training. London: Croom Helm, 1983.

Dyfyniad MLA

Ellis, Roger, and Dorothy Whittington. New Directions in Social Skill Training. Croom Helm, 1983.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.