APA (7th ed.) Citation

International Peace Research Institute, Oslo, Larsen, K. S., & International Peace Research Institute. (1993). Conflict and social psychology. Sage.

Chicago Style (17th ed.) Citation

International Peace Research Institute, Oslo, Knud S. Larsen, and International Peace Research Institute. Conflict and Social Psychology. London: Sage, 1993.

MLA (8th ed.) Citation

International Peace Research Institute, Oslo, et al. Conflict and Social Psychology. Sage, 1993.