Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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