Taxon - Odkazy a literatura
Paleobiology Database [247842]
Paleobiology Database [https://paleobiodb.org/] [jako Ivshinagnostus quadratus Choi, Lee & Sheen, 2004]
Datum citace: 29. únor 2020
Lemke U. (2019): Catalogue of the available names and non available names of the species and subspecies for the class Trilobita [jako Ivshinagnostus quadratus Choi, Li & Sheen 2004]Datum citace: 3. březen 2020