Kroh, A.; Mooi, R. (2021). World Echinoidea Database. Echinosigra (Echinosigra) Mortensen, 1907. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=759076 on 2024-09-01
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species. Echinosigra (Echinosigra) Mortensen, 1907. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=759076 on 2024-09-01