Ax, P.; Ax, R. (1967). Turbellaria proseriata von der Pazifikküste der USA (Washington) 1. otoplanidae. <em>Zeitschrit fur der Morphologie der Tiere.</em> 61: 215-254.[details]
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2025). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Itaspiella helgolandica magna (Ax, 1967). Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=154696 on 2025-04-04
Marine Species Traits editorial board (2025). Marine Species Traits. Itaspiella helgolandica magna (Ax, 1967). Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=154696 on 2025-04-04
original descriptionAx, P.; Ax, R. (1967). Turbellaria proseriata von der Pazifikküste der USA (Washington) 1. otoplanidae. <em>Zeitschrit fur der Morphologie der Tiere.</em> 61: 215-254.[details]
Present Inaccurate Introduced: alien Containing type locality