APA (7th ed.) Citation

Pan American Union. (1940). The Pan American union and the Pan American conferences. Pan American union.

Chicago Style (17th ed.) Citation

Pan American Union. The Pan American Union and the Pan American Conferences. Washington, D.C.: Pan American union, 1940.

MLA (9th ed.) Citation

Pan American Union. The Pan American Union and the Pan American Conferences. Pan American union, 1940.

Warning: These citations may not always be 100% accurate.