APA (7th ed.) Citation

Butler, W. E. (1980). International law in comparative perspective. Sijthoff & Noordhoff.

Chicago Style (17th ed.) Citation

Butler, William Elliott. International Law in Comparative Perspective. Alphen aan den Rijn ; Germantown, Md.: Sijthoff & Noordhoff, 1980.

MLA (9th ed.) Citation

Butler, William Elliott. International Law in Comparative Perspective. Sijthoff & Noordhoff, 1980.