Read, G.; Fauchald, K. (Ed.) (2021). World Polychaeta database.
Ephesia gracilis Rathke, 1843. Accessed through: VLIZ Belgian Marine Species Consortium (2010 onwards) Belgian Register of Marine Species at: http://www.marinespecies.org/berms/aphia.php?p=taxdetails&id=155012 on 2025-05-23
VLIZ Belgian Marine Species Consortium (2010 onwards). Belgian Register of Marine Species.
Ephesia gracilis Rathke, 1843. Accessed at: https://marinespecies.org/berms/aphia.php?p=taxdetails&id=155012 on 2025-05-23