Cita APA (7a ed.)

Lepard, B. D. (2010). Customary international law: A new theory with practical applications (1st published.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Lepard, Brian D. Customary International Law: A New Theory with Practical Applications. 1st published. Cambridge [etc.]: Cambridge University Press, 2010.

Cita MLA (9a ed.)

Lepard, Brian D. Customary International Law: A New Theory with Practical Applications. 1st published. Cambridge University Press, 2010.