Cita APA (7a ed.)

Kelsen, H. (1966). Principles of international law (2nd ed.). Rinehart and Winston.

Cita Chicago Style (17a ed.)

Kelsen, Hans. Principles of International Law. 2nd ed. New York: Rinehart and Winston, 1966.

Cita MLA (9a ed.)

Kelsen, Hans. Principles of International Law. 2nd ed. Rinehart and Winston, 1966.