Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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