Hart, H. L. A. (1961). The concept of law (2nd ed.). Oxford university press.
芝加哥风格引文Hart, H. L. A. The Concept of Law. 2nd ed. Oxford: Oxford university press, 1961.
MLA引文Hart, H. L. A. The Concept of Law. 2nd ed. Oxford university press, 1961.
警告：这些引文格式不一定是100％准确.