APA (7th ed.) Citation

Lewin, K., Lewin, G. W., & Allport, G. W. (1948). Resolving social conflicts: Selected papers on group dynamics. Harper.

Chicago Style (17th ed.) Citation

Lewin, Kurt, Gertrud Weiss Lewin, and Gordon W. Allport. Resolving Social Conflicts: Selected Papers on Group Dynamics. New York: Harper, 1948.

MLA (9th ed.) Citation

Lewin, Kurt, et al. Resolving Social Conflicts: Selected Papers on Group Dynamics. Harper, 1948.