Cita APA (7a ed.)

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. Martinus Nijhoff.

Cita Chicago Style (17a ed.)

Villiger, Mark Eugen. 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 [etc.]: Martinus Nijhoff, 1985.

Cita MLA (9a ed.)

Villiger, Mark Eugen. 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. Martinus Nijhoff, 1985.