Schemes including Thamnophis sirtalis sirtalis

• The Reptile Database (Thamnophis_sirtalis_sirtalis) Thamnophis sirtalis sirtalis
• NatureServe Explorer: An online encyclopedia of life. Version 7.1 (ELEMENT_GLOBAL.2.100874) Thamnophis sirtalis sirtalis
• GBIF (7190666) Thamnophis sirtalis sirtalis