Dyfyniad APA

Luhmann, N. (2004). Law as a social system. Oxford University Press.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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