APA (7th ed.) Citation

Duckworth, W. D., & Eichlin, T. D. (1973). The type-material of North American clearwing moths (Lepidoptera: Sesiidae). Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Duckworth, W. Donald, and Thomas D. Eichlin. The Type-material of North American Clearwing Moths (Lepidoptera: Sesiidae). Washington, D.C.: Smithsonian Institution Press, 1973.

MLA (9th ed.) Citation

Duckworth, W. Donald, and Thomas D. Eichlin. The Type-material of North American Clearwing Moths (Lepidoptera: Sesiidae). Smithsonian Institution Press, 1973.