APA (7th ed.) Citation

Pan American Union. (1941). The Pan American book shelf, volume 4, number 1, January 1941. [s.n.].

Chicago Style (17th ed.) Citation

Pan American Union. The Pan American Book Shelf, Volume 4, Number 1, January 1941. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

Pan American Union. The Pan American Book Shelf, Volume 4, Number 1, January 1941. [s.n.], 1941.