Taxon - Links and literature
de Jong, Y.S.D.M. (ed.): Fauna Europaea 2.4 [http://www.faunaeur.org] [as Copris umbilicatus Abeille de Perrin, 1901]Data retrieved on: 9 March 2012
IUCN Red List of Threatened Species 2024-1 [47267970]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [as Copris umbilicatus Abeille de Perrin, 1901]
Data retrieved on: 29 January 2024
Zahradník P. (2017): Check-list of beetles (Coleoptera) of the Czech republic and Slovakia, Lesnická práce, s.r.o. [as Copris (Copris) umbilicatus Abeille de Perrin, 1901]Data retrieved on: 31 January 2020
Juřena D, Týr V. (2008): Checklist of Scarabaeoidea (Coleoptera) of the Czech Republic and Slovakia, Klapalekiana, 44 (Suppl.): 3-15 [as Copris (Copris) umbilicatus Abeille de Perrin, 1901]Data retrieved on: 25 June 2016