Bamber, R.N.; El Nagar, A.; Arango, C.P. (Eds) (2024). Pycnobase: World Pycnogonida Database.
Nymphon gracile Sars, 1891. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024) European Register of Marine Species at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=379196 on 2024-04-27
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species.
Nymphon gracile Sars, 1891. Accessed at: http://www.marbef.org/data./aphia.php?p=taxdetails&id=379196 on 2024-04-27