APA (7th ed.) Citation

Hart, H. L. A., Bulloch, P. A., & Raz, J. (2012). The concept of law (3rd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Hart, H. L. A., Penelope A. Bulloch, and Joseph Raz. The Concept of Law. 3rd ed. Oxford: Oxford University Press, 2012.

MLA (9th ed.) Citation

Hart, H. L. A., et al. The Concept of Law. 3rd ed. Oxford University Press, 2012.