Fisher, W. K. (1946). Echiuroid worms of the North Pacific Ocean. <em>Proceedings of the United States National Museum.</em> 96: 215�292, plates 20�37., available online athttps://www.biodiversitylibrary.org/page/7311441 page(s): 230. [details]
Land J. van der (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). Thalassema steinbecki Fisher, 1946. Accessed at: https://marinespecies.org/urmo/aphia.php?p=taxdetails&id=266312 on 2024-03-29
original descriptionFisher, W. K. (1946). Echiuroid worms of the North Pacific Ocean. <em>Proceedings of the United States National Museum.</em> 96: 215�292, plates 20�37., available online athttps://www.biodiversitylibrary.org/page/7311441 page(s): 230. [details]