Rice, Nathan H.; Martínez-Meyer, Enrique & Peterson, A. Townsend (2003): Ecological niche differentiation in the Aphelocoma jays: a phylogenetic perspective. Biological Journal of the Linnean Society80(3): 369–383. COI:10.1046/j.1095-8312.2003.00242.xPDF plena tekstoArkivigite je 2009-03-19 per la retarkivo Wayback Machine
doi.org
dx.doi.org
Curry, Robert L.; Peterson, A. Townsend & Langen, T.A. (2002): Western Scrub-Jay (Aphelocoma californica). In: Poole, A. & Gill, F. (eds.): The Birds of North America712. Academy of Natural Sciences, Philadelphia, PA & American Ornithologists' Union, Washington, D.C. Reta versio, elŝutita la 2007-FEB-25. COI:10.2173/bna.712 (postulas subskribon)
Rice, Nathan H.; Martínez-Meyer, Enrique & Peterson, A. Townsend (2003): Ecological niche differentiation in the Aphelocoma jays: a phylogenetic perspective. Biological Journal of the Linnean Society80(3): 369–383. COI:10.1046/j.1095-8312.2003.00242.xPDF plena tekstoArkivigite je 2009-03-19 per la retarkivo Wayback Machine
Emslie, Steven D. (1996): A fossil Scrub-Jay supports a recent systematic decision. Condor98(4): 675-680. PDF plena tekstoArkivigite je 2010-07-30 per la retarkivo Wayback Machine
web.archive.org
Emslie, Steven D. (1996): A fossil Scrub-Jay supports a recent systematic decision. Condor98(4): 675-680. PDF plena tekstoArkivigite je 2010-07-30 per la retarkivo Wayback Machine
Rice, Nathan H.; Martínez-Meyer, Enrique & Peterson, A. Townsend (2003): Ecological niche differentiation in the Aphelocoma jays: a phylogenetic perspective. Biological Journal of the Linnean Society80(3): 369–383. COI:10.1046/j.1095-8312.2003.00242.xPDF plena tekstoArkivigite je 2009-03-19 per la retarkivo Wayback Machine