Gibbs, Jason, Sheila Dumesh, and Terry L. Griswold. “Bees of the Genera Dufourea and Dieunomia of Michigan (Hymenoptera: Apoidea: Halictidae), With a Key to the Dufourea of the Eastern United States”. Journal of Melittology, no. 29 (March 21, 2014): 1–15. Accessed May 4, 2024. https://journals.ku.edu/melittology/article/view/4652.