Taxon - Odkazy a literatura
de Jong, Y.S.D.M. (ed.): Fauna Europaea 2.4 [http://www.faunaeur.org] [jako Protosmia capitata (Schletterer, 1889)]Datum citace: 9. březen 2012
Ruggiero M. (ed) (2008): World Bee Checklist [http://www.itis.gov/beechecklist.html], ITIS [jako Protosmia capitata (Schletterer, 1889)]Datum citace: 10. duben 2010
IUCN Red List of Threatened Species 2024-1 [19199217]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [jako Protosmia capitata (Schletterer, 1889)]
Datum citace: 29. leden 2024