APA (7th ed.) Citation

Oppenheim, L., & Roxburgh, R. (1955). International law: A treatise. Longmas.

Chicago Style (17th ed.) Citation

Oppenheim, L., and Ronald Roxburgh. International Law: A Treatise. London: Longmas, 1955.

MLA (9th ed.) Citation

Oppenheim, L., and Ronald Roxburgh. International Law: A Treatise. Longmas, 1955.

Warning: These citations may not always be 100% accurate.