APA (7th ed.) Citation

Koch, J., Strange, J., & Williams, P. (2012). Bumble bees of the western United States. [U.S. Forest Service ; San Francisco, Calif.] : [Pollinator Partnership].

Chicago Style (17th ed.) Citation

Koch, Jonathan, James Strange, and Paul Williams. Bumble Bees of the Western United States. [Washington, D.C.]: [U.S. Forest Service ; San Francisco, Calif.] : [Pollinator Partnership], 2012.

MLA (9th ed.) Citation

Koch, Jonathan, et al. Bumble Bees of the Western United States. [U.S. Forest Service ; San Francisco, Calif.] : [Pollinator Partnership], 2012.