APA (7th ed.) Citation

Hanken, A. F. G., & Reuver, H. A. (1981). Social systems and learning systems. M. Nijhoff.

Chicago Style (17th ed.) Citation

Hanken, A. F. G., and H. A. Reuver. Social Systems and Learning Systems. Boston: M. Nijhoff, 1981.

MLA (9th ed.) Citation

Hanken, A. F. G., and H. A. Reuver. Social Systems and Learning Systems. M. Nijhoff, 1981.