↑Ungricht, Stefan, Andreas Müller, and Silvia Dorn (2008) A taxonomic catalogue of the Palaearctic bees of the tribe Osmiini (Hymenoptera: Apoidea: Megachilidae), Zootaxa, issue 1865
↑ (2006) , Manuscript, Checklist of Apoidea of North America... - 12 Oktubre 2006
↑Eickwort, George C. (1981) Two European species of Chelostoma established in New York state (Hymenoptera: Megachilidae), Psyche, vol. 87, no. 3-4
↑ 6.06.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
↑ITIS Bees: World Bee Checklist. Ruggiero M. (project leader), Ascher J. et al., 28 Septyembre 2009