APA استشهاد

Hart, H. L. A. (2012). Concept of law (Third edition.). OUP.

استشهاد بنمط شيكاغو

Hart, H. L. A. Concept of Law. Third edition. Oxford: OUP, 2012.

MLA استشهاد

Hart, H. L. A. Concept of Law. Third edition. OUP, 2012.