APA (7th ed.) Citation

Hart, H. L. A. (1972). The concept of law / by H.L.A. Hart. Clarendon Press.

Chicago Style (17th ed.) Citation

Hart, H. L. A. The Concept of Law / by H.L.A. Hart. Oxford: Clarendon Press, 1972.

MLA (9th ed.) Citation

Hart, H. L. A. The Concept of Law / by H.L.A. Hart. Clarendon Press, 1972.

Warning: These citations may not always be 100% accurate.