Cita APA (7a ed.)

Klabbers, J., Peters, A., & Ulfstein, G. (2009). The Constitutionalization of international law. Oxford University Press.

Cita Chicago Style (17a ed.)

Klabbers, Jan, Anne Peters, y Geir Ulfstein. The Constitutionalization of International Law. Oxford: Oxford University Press, 2009.

Cita MLA (9a ed.)

Klabbers, Jan, et al. The Constitutionalization of International Law. Oxford University Press, 2009.