Audubon, John James (1834). "Townsend's Bunting". Ornithological Biography, or an account of the habits of the birds of the United States of America. Vol. 2. Edinburgh: Adam Black. pp. 183–184.
Audubon, John James (1841). "Townsend's Bunting". The Birds of America, from drawings made in the United States and their territories. Vol. 3. New York: J.B. Chevalier. p. 62, Plate 157.
Ridgway, Robert (1901). "Spiza townsendii (Audubon)". The Birds of North and Middle America. Bulletin of the United States National Museum. Volume 50, Part 1. Washington. pp. 174–175.{{cite book}}: CS1 maint: location missing publisher (link)
