APA (7th ed.) Citation

(1955). Small groups: Studies in social interaction (1. ed.). Knopf.

Chicago Style (17th ed.) Citation

Small Groups: Studies in Social Interaction. 1. ed. New York: Knopf, 1955.

MLA (9th ed.) Citation

Small Groups: Studies in Social Interaction. 1. ed. Knopf, 1955.