Cita APA

Gray, J. C., & Gray, R. (1963). The nature and sources of the law (Second edition from the author's notes.). Beacon Press.

Citación estilo Chicago

Gray, John Chipman, and Roland Gray. The Nature and Sources of the Law. Second edition from the author's notes. Boston: Beacon Press, 1963.

Cita MLA

Gray, John Chipman, and Roland Gray. The Nature and Sources of the Law. Second edition from the author's notes. Beacon Press, 1963.