APA (7th ed.) Citation

Kelsen, H. (1967). Principles of international law (2a. ed.). Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Kelsen, Hans. Principles of International Law. 2a. ed. Nueva York: Holt, Rinehart and Winston, 1967.

MLA (9th ed.) Citation

Kelsen, Hans. Principles of International Law. 2a. ed. Holt, Rinehart and Winston, 1967.