APA (7th ed.) Citation

Pan American Union & ProQuest (Firm). (1940). Bulletin of the Pan American Union. [publisher not identified].

Chicago Style (17th ed.) Citation

Pan American Union and ProQuest (Firm). Bulletin of the Pan American Union. Washington: [publisher not identified], 1940.

MLA (9th ed.) Citation

Pan American Union and ProQuest (Firm). Bulletin of the Pan American Union. [publisher not identified], 1940.

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