↑International Union for Conservation of Nature and Natural Resources (IUCN) (1990) 1990 IUCN red list of threatened animals., IUCN, Gland, Switzerland and Cambridge, U.K. 288 p.
↑ 3.03.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
↑FishBase. Froese R. & Pauly D. (eds), 14 Hunyo 2011