Griswold, T., and J. S. Ascher. 2004. Checklist of Apoidea of North America (including Central America and the Caribbean) (as-yet unpublished manuscript from 2004)
Reference for:
Nomia nortoni cressoni
Source:
World Bee Checklist Project
Acquired:
2007-12-13
Notes:
John Ascher, Connal Eardley, Terry Griswold, Gabriel Melo, Andrew Polaszek, Michael Ruggiero, Paul Williams, Ken Walker, and Natapot Warrit. Additional credits noted at: http://www.discoverlife.org/mp/20q?act=x_guide_credit&guide=Apoidea_species