APA (7th ed.) Citation

Hurd, P. D., Jr, La Berge, W. E., & Linsley, E. G. (1980). Principal sunflower bees of North America with emphasis on the Southwestern United States (Hymemoptera: Apoides). Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Hurd, Paul D., Jr, Wallace E. La Berge, and E. Gorton Linsley. Principal Sunflower Bees of North America with Emphasis on the Southwestern United States (Hymemoptera: Apoides). Washington: Smithsonian Institution Press, 1980.

MLA (9th ed.) Citation

Hurd, Paul D., Jr, et al. Principal Sunflower Bees of North America with Emphasis on the Southwestern United States (Hymemoptera: Apoides). Smithsonian Institution Press, 1980.