APA (7th ed.) Citation

International Peace Research Institute, Galtung, J., & Lodgaard, S. (1970). Co-operation in Europe. Universitetsforlaget.

Chicago Style (17th ed.) Citation

International Peace Research Institute, Johan Galtung, and Sverre Lodgaard. Co-operation in Europe. Oslo: Universitetsforlaget, 1970.

MLA (9th ed.) Citation

International Peace Research Institute, et al. Co-operation in Europe. Universitetsforlaget, 1970.