APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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