APA (7th ed.) Citation

Westlake, J., & Butler, W. E. (1904). International law [microform]. The University Press.

Chicago Style (17th ed.) Citation

Westlake, John, and W. E. Butler. International Law [microform]. Cambridge: The University Press, 1904.

MLA (9th ed.) Citation

Westlake, John, and W. E. Butler. International Law [microform]. The University Press, 1904.