- ↑ 1.0 1.1
"Squalius squalus". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature. 2011. Ginkuhà 24 Oktubre 2012.
- ↑ Kottelat, M. (1997) European freshwater fishes., Biologia 52, Suppl. 5:1-271.
- ↑ Kottelat, M. and J. Freyhof (2007) Handbook of European freshwater fishes., Publications Kottelat, Cornol, Switzerland. 646 p.
- ↑ 4.0 4.1 Bisby 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