APA (7th ed.) Citation

United States National Museum. (1943). New Species of American Scolytoid Beetles, Mostly Neotropical. [s.n.].

Chicago Style (17th ed.) Citation

United States National Museum. New Species of American Scolytoid Beetles, Mostly Neotropical. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

United States National Museum. New Species of American Scolytoid Beetles, Mostly Neotropical. [s.n.], 1943.