Cita APA (7a ed.)

Hart, H. L. A. (2012). The concept of law (Third edition.). Oxford University Press.

Cita Chicago Style (17a ed.)

Hart, H. L. A. The Concept of Law. Third edition. Oxford: Oxford University Press, 2012.

Cita MLA (8a ed.)

Hart, H. L. A. The Concept of Law. Third edition. Oxford University Press, 2012.