Literature
Auteur(s) Potts, S.G., Praz, C., Quaranta, M., Radchenko, V.G., Scheuchl, E., Smit, J., Straka, J., Terzo, M., Tomozii, B., Window, J. and Michez, D.
Jaar 2014
Titel European Red List of bees. Luxembourg: Publication Office of the European Union.