APA (7th ed.) Citation

Hurd, P. D., & Linsley, E. G. (1972). Parasitic bees of the genus Holcopasites Ashmead, Hymenoptera: Apoidea. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Hurd, Paul D., and E. Gorton Linsley. Parasitic Bees of the Genus Holcopasites Ashmead, Hymenoptera: Apoidea. Washington, D.C, USA: Smithsonian Institution, 1972.

MLA (9th ed.) Citation

Hurd, Paul D., and E. Gorton Linsley. Parasitic Bees of the Genus Holcopasites Ashmead, Hymenoptera: Apoidea. Smithsonian Institution, 1972.