APA (7th ed.) Citation

Oppenheim, L., & Lauterpacht, H. (1952). International law: A treatise. Longmans, Green.

Chicago Style (17th ed.) Citation

Oppenheim, L., and Hersch Lauterpacht. International Law: A Treatise. London [etc.]: Longmans, Green, 1952.

MLA (9th ed.) Citation

Oppenheim, L., and Hersch Lauterpacht. International Law: A Treatise. Longmans, Green, 1952.