Taxon - Links and literature
de Jong, Y.S.D.M. (ed.): Fauna Europaea 2.4 [http://www.faunaeur.org] [as Ceratina gravidula Gerstaecker, 1869]Data retrieved on: 9 March 2012
IUCN Red List of Threatened Species 2024-1 [13320156]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [as Ceratina gravidula Gerstäcker, 1869]
Data retrieved on: 29 January 2024
Ruggiero M. (ed) (2008): World Bee Checklist [http://www.itis.gov/beechecklist.html], ITIS [as Ceratina gravidula Gerstäcker, 1869]Data retrieved on: 10 April 2010