Cita APA (7a ed.)

Perreau-Saussine, A., & Murphy, J. B. (2007). The nature of customary law. Cambridge University Press.

Cita Chicago Style (17a ed.)

Perreau-Saussine, Amanda, y James Bernard Murphy. The Nature of Customary Law. Cambridge ; New York: Cambridge University Press, 2007.

Cita MLA (9a ed.)

Perreau-Saussine, Amanda, y James Bernard Murphy. The Nature of Customary Law. Cambridge University Press, 2007.