Swalla, B.J.; van der Land, J. (2024). Hemichordata World Database.
Eocephalodiscus polonicus Kozlowski, 1949 †. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=579856 on 2024-05-04
Marine Species Traits editorial board (2024). Marine Species Traits.
Eocephalodiscus polonicus Kozlowski, 1949 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=579856 on 2024-05-04