APA (7th ed.) Citation

Oppenheim, L., & Lauterpacht, H. (1948). International law: A treatise (7th ed.). Longmans, Green.

Chicago Style (17th ed.) Citation

Oppenheim, L., and Hersch Lauterpacht. International Law: A Treatise. 7th ed. London ; New York: Longmans, Green, 1948.

MLA (9th ed.) Citation

Oppenheim, L., and Hersch Lauterpacht. International Law: A Treatise. 7th ed. Longmans, Green, 1948.