Gibbs J, Dumesh S, Griswold TL. Bees of the genera Dufourea and Dieunomia of Michigan (Hymenoptera: Apoidea: Halictidae), with a key to the Dufourea of the eastern United States. J. Melittol. 2014;(29):1-15. doi:10.17161/jom.v0i29.4652