↑ 1.0 1.1
"Spizella breweri " . IUCN Red List of Threatened Species. Version 2012.2International Union for Conservation of Nature . 2012. Ginkuhà 24 Oktubre 2012 .
↑ 2.0 2.1 (1996) , database, NODC Taxonomic Code
↑ 3.0 3.1 (2007) , website, Zoonomen - Zoological Nomenclature Resource, 2007.09.20
↑ Paynter, Raymond A. Jr., and Robert W. Storer (1970) , Check-list of Birds of the World, vol. 13
↑ Gill, Frank, and Minturn Wright (2006) , Birds of the World: Recommended English Names
↑ (2007) , website, Gill & Wright (2006) corrigenda/updates - 21 Septyembre 2007
↑ Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2003) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
↑ Banks, R. C., R. W. McDiarmid, and A. L. Gardner (1987) Checklist of Vertebrates of the United States, the U.S. Territories, and Canada, Resource Publication, no. 166
↑ (2007) , website, AOU Check-List (07-2007)
↑ 10.0 10.1 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 ) ↑ ITIS: The Integrated Taxonomic Information System . Orrell T. (custodian), 26 Abril 2011
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