Bamber, R.N.; El Nagar, A. & Arango, C. P. (Eds) (2018). Pycnobase: World Pycnogonida Database.
Nymphon variatum Hilton, 1942. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2018) European Register of Marine Species at: http://marbef.org/data../aphia.php?p=taxdetails&id=379184 on 2021-01-15
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021). European Register of Marine Species.
Nymphon variatum Hilton, 1942. Accessed at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=379184 on 2021-01-15