APA (7th ed.) Citation

Smithsonian Institution. (1937). New subspecies of nymphalid butterfly, Polygonia faunus. [s.n.].

Chicago Style (17th ed.) Citation

Smithsonian Institution. New Subspecies of Nymphalid Butterfly, Polygonia Faunus. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

Smithsonian Institution. New Subspecies of Nymphalid Butterfly, Polygonia Faunus. [s.n.], 1937.