Cita APA (7th ed.)

Hart, H. L. A. (1994). The concept of law (2a. ed.). Clarendon Press.

Cita Chicago (17th ed.)

Hart, H. L. A. The Concept of Law. 2a. ed. Nueva York: Clarendon Press, 1994.

Cita MLA (9th ed.)

Hart, H. L. A. The Concept of Law. 2a. ed. Clarendon Press, 1994.