Style de citation APA (7e éd.)

Williams, P. H. (2014). Bumble bees of North America: An identification guide. Princeton University Press.

Style de citation Chicago (17e éd.)

Williams, Paul H. Bumble Bees of North America: An Identification Guide. Princeton, New Jersey ; Oxfordshire, England: Princeton University Press, 2014.

Style de citation MLA (9e éd.)

Williams, Paul H. Bumble Bees of North America: An Identification Guide. Princeton University Press, 2014.