Taxon - Odkazy a literatura
Reptile Database - Search [genus=Heterodon&species=simus]
Reptile Database - Search [http://reptile-database.reptarium.cz/] [jako Heterodon simus (LINNAEUS, 1766)]
Datum citace: 20. srpen 2018
IUCN Red List of Threatened Species 2024-1 [63821]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [jako Heterodon simus (Linnaeus, 1766)]
Datum citace: 29. leden 2024
Paleobiology Database [155179]
Paleobiology Database [https://paleobiodb.org/] [jako Heterodon simus (Linnaeus, 1766)]
Datum citace: 11. prosinec 2015