BioStor
 | Bees in the collection of the U. S. National Museum. 1 T D A Cockerell (1911) Proceedings of The United States National Museum 39: 635-658 |
 | Names applied to bees of the genus Nomada, found in North America T D A Cockerell (1911) Proceedings of The United States National Museum 41: 225-243 |
 | The type species of the genera and subgenera of bees Grace A Sandhouse (1943) Proceedings of the United States National Museum 92(3156): 519-619 |
 | Species-groups and cladistic analysis of the cleptoparastic [sic] bee genus Nomada (Hymenoptera: Apoidea) (1994) University of Kansas Science Bulletin 55: 175-236 |
 | Genus-group names of bees and supplemental family-group names Charles D Michener (1997) Scientific Papers Natural History Museum University of Kansas 1: 1-81 |
 | An Inordinate Fondness for Things that Sting John T Longino and Gordon C Snelling (2009) Journal of Hymenoptera Research 18: 125-135 |