Steinböck, O. (1933). Die Turbellarienfauna der Umgebung von Rovigno. <em>Thalassia.</em> 1: 1–33.[details] Available for editors
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2021). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Polycystis steueri Steinböck, 1933. Accessed at: http://www.marinespecies.org/turbellarians/aphia.php?p=taxdetails&id=155674 on 2024-04-23