↑Lowther, P. E., R. Fraga, T. S. Schulenberg, and S. M. Lanyon (2004) Nomenclatural solution for a polyphyletic Agelaius, Bulletin of the British Ornithologists' Club, vol. 124, no. 3
↑ 7.07.1Bisby 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)
↑ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 26 Abril 2011