APA (7th ed.) Citation

Organization of American States, Pan American Union, Pan American Union. Department of Public Information, Pan American Union. Department of International Law and Organization, & Pan American Union. Department of International Law. (1949). Annals of the Organization of American States. Dept. of Public Information, Pan American Union.

Chicago Style (17th ed.) Citation

Organization of American States, Pan American Union, Pan American Union. Department of Public Information, Pan American Union. Department of International Law and Organization, and Pan American Union. Department of International Law. Annals of the Organization of American States. Washington, D.C.: Dept. of Public Information, Pan American Union, 1949.

MLA (9th ed.) Citation

Organization of American States, et al. Annals of the Organization of American States. Dept. of Public Information, Pan American Union, 1949.