APA (7th ed.) Citation

Heppner, J. B., & Duckworth, D. W. (1981). Classification of the superfamily Sesioidea (Lepidopetera: Ditrepia). Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Heppner, John B., and Donald W. Duckworth. Classification of the Superfamily Sesioidea (Lepidopetera: Ditrepia). Washington: Smithsonian Institution Press, 1981.

MLA (9th ed.) Citation

Heppner, John B., and Donald W. Duckworth. Classification of the Superfamily Sesioidea (Lepidopetera: Ditrepia). Smithsonian Institution Press, 1981.