Style de citation APA

Gray, J. C. (1963). The nature and sources of the law (2nd ed.). Beacon Press.

Style de citation Chicago

Gray, John Chipman. The Nature and Sources of the Law. 2nd ed. Boston: Beacon Press, 1963.

Style de citation MLA

Gray, John Chipman. The Nature and Sources of the Law. 2nd ed. Beacon Press, 1963.