World Register of Marine Species (WoRMS)
Guiry, M.D. & Guiry, G.M. (2026). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Gymnodinium variabile E.C.Herdman, 1924. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=109835 on 2026-08-02
Herdman, E. C. (1924). Notes on dinoflagellates and other organisms causing discolouration of the sand at Port Erin IV. Transactions of the Liverpool Biological Society. 38: 75-84.