Villiger, M. E. (1985). Customary international law and treaties: A study of their interactions and interrelations with special consideration of the 1969 Vienna Convention on the law of treaties. Nijhoff.
Chicago Style (17th ed.) CitationVilliger, Mark E. Customary International Law and Treaties: A Study of Their Interactions and Interrelations with Special Consideration of the 1969 Vienna Convention on the Law of Treaties. Dordrecht u.a: Nijhoff, 1985.
MLA (9th ed.) CitationVilliger, Mark E. Customary International Law and Treaties: A Study of Their Interactions and Interrelations with Special Consideration of the 1969 Vienna Convention on the Law of Treaties. Nijhoff, 1985.
Warning: These citations may not always be 100% accurate.