APA (7th ed.) Citation

Luhmann, N., Kastner, F., & Nobles, R. (2004). Law as a social system. Oxford University Press.

Chicago Style (17th ed.) Citation

Luhmann, Niklas, Fatima Kastner, and Richard Nobles. Law as a Social System. Oxford: Oxford University Press, 2004.

MLA (9th ed.) Citation

Luhmann, Niklas, et al. Law as a Social System. Oxford University Press, 2004.