Cita APA (7a ed.)

Raz, J. (1980). The Concept of a legal system: An introduction to the theory of legal system (2nd. ed.). Clarendon Press.

Cita Chicago Style (17a ed.)

Raz, Joseph. The Concept of a Legal System: An Introduction to the Theory of Legal System. 2nd. ed. Oxford: Clarendon Press, 1980.

Cita MLA (9a ed.)

Raz, Joseph. The Concept of a Legal System: An Introduction to the Theory of Legal System. 2nd. ed. Clarendon Press, 1980.