Finucci, B., Derrick, D., Dia, M., Ducrocq, M., Neat, F.C., Pacoureau, N., Serena, F. & VanderWright, W.J.: Etmopterus spinaxIUCN Red List of Threatened Species. Version 2021-2. 2021. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 4.9.2021. (englanniksi)
