Nomada obtusifrons NYLANDER, 1848
- Ban, C.M. 2006. Checklist of Anthophorid species (Hymenoptera: Anthophoridae) from Romania. Studii şi comunicări piatra neamţ, pp. 245 – 251.
- Ban, C.M. and Tomozei, B. 2006. New data on the Apoid Hymenopterans (Hymenoptera: Andrenidae, Anthophoridae, Apidae) from Dobrogea (Romania). Travaux du Museum NHN “Grigore Antipa” XLIX. pp307-318.
- Bieri, S. 2002. Die Bienen und Wespen des Fürstentums Liechtenstein. Amtlicher Lehrmittelverlag.
- Else, G.R. & Edwards, M. 2018. Handbook of the Bees of the British Isles. Ray Society, London.
- Peeters, T.M.J., I.P. Raemakers & J. Smit 1999. Voorlopige atlas van de Nederlandse bijen (Apidae). European Invertebrate Survey Nederland, Leiden, 230 pp.
- Schwarz, M., F. Gusenleitner, P. Westrich & H. Dathe 1996. Katalog der Bienen Österreichs, Deutschlands und der Schweiz (Hymenoptera, Apidae). Entomofauna Suppl. 8: 1-398.
- Smit, J. 2018. Identification key to the European species of the bee genus Nomada Scopoli, 1770 (Hymenoptera: Apidae), including 23 new species. Entomofauna Monographie 3: 1-253 Ansfelden.
- Söderman, G. and Leinonen, R. 2003. Suomen Mesipistiäiset ja niiden uhanalaisuus. Tremex Press Oy, Helsinki.