APA (7th ed.) Citation

Coville, R. E. (1981). Wasps of the genus Trypoxylon subgenus Trypargilum in North America: Hymenoptera, Sphecidae. University of California.

Chicago Style (17th ed.) Citation

Coville, Rollin E. Wasps of the Genus Trypoxylon Subgenus Trypargilum in North America: Hymenoptera, Sphecidae. Berkeley: University of California, 1981.

MLA (9th ed.) Citation

Coville, Rollin E. Wasps of the Genus Trypoxylon Subgenus Trypargilum in North America: Hymenoptera, Sphecidae. University of California, 1981.

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