APA (7th ed.) Citation

Villiger, M. E. (1997). Customary international law and treaties: A manual on the theory and practice of the interrelation of sources (2nd ed., fully rev.). Kluwer Law International.

Chicago Style (17th ed.) Citation

Villiger, Mark Eugen. Customary International Law and Treaties: A Manual on the Theory and Practice of the Interrelation of Sources. 2nd ed., fully rev. The Hague ; Boston: Kluwer Law International, 1997.

MLA (9th ed.) Citation

Villiger, Mark Eugen. Customary International Law and Treaties: A Manual on the Theory and Practice of the Interrelation of Sources. 2nd ed., fully rev. Kluwer Law International, 1997.