APA (7th ed.) Citation

Smithsonian Institution. (1938). New genus and 2 new species of dipterous family Phoridae. [s.n.].

Chicago Style (17th ed.) Citation

Smithsonian Institution. New Genus and 2 New Species of Dipterous Family Phoridae. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

Smithsonian Institution. New Genus and 2 New Species of Dipterous Family Phoridae. [s.n.], 1938.