Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2025). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Polycelis nigra (Müller, 1774). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=416417 on 2026-09-08
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