Saiz, J. (2021). World Sipuncula Database.
Sipunculus norvegicus Danielssen, 1869. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://marinespecies.org/traits/aphia.php?p=taxdetails&id=424077 on 2024-05-06
Marine Species Traits editorial board (2024). Marine Species Traits.
Sipunculus norvegicus Danielssen, 1869. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=424077 on 2024-05-06