APA (7th ed.) Citation

(1941). Notes on birds of Guatemalan highlands. [s.n.].

Chicago Style (17th ed.) Citation

Notes on Birds of Guatemalan Highlands. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

Notes on Birds of Guatemalan Highlands. [s.n.], 1941.

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