Cita APA (7a ed.)

George, R. P. (1999). In defense of natural law. Clarendon Press.

Cita Chicago Style (17a ed.)

George, Robert P. In Defense of Natural Law. Oxford: Clarendon Press, 1999.

Cita MLA (9a ed.)

George, Robert P. In Defense of Natural Law. Clarendon Press, 1999.