APA (7th ed.) Citation

Clark, A. H. (1951). The butterflies of Virginia (with 31 plates). United States National Museum. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Clark, A. H. The Butterflies of Virginia (with 31 Plates). City of Washington: United States National Museum. Smithsonian Institution, 1951.

MLA (9th ed.) Citation

Clark, A. H. The Butterflies of Virginia (with 31 Plates). United States National Museum. Smithsonian Institution, 1951.

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