International Commisision on Zoological Nomenclature. 1955. Opinion 339. Acceptance of the name concolorWoodbury, 1929, as published in the combination Crotalus concolor, as the name for the Yellow Rattlesnake of the Colorado River Basin. pp. 181–200 InHemming, F. (ed.). Opinions and declarations rendered by the International Commission on Zoological Nomenclature. Volume 10, part 6. International Trust for Zoological Nomenclature: London. BHL