Hosner, Peter A.; Andersen, Michael J.; Robbins, Mark B.; Urbay-Tello, Abraham; Cueto-Aparicio, Luis; Verde-Guerra, Karen; Sánchez-González, Luis A.; Navarro-Sigüenza, Adolfo G.; Boyd, Roger L. (Dec 2015). "Avifaunal Surveys of the Upper Apurímac River Valley, Ayacucho and Cuzco Departments, Peru: New Distributional Records and Biogeographic, Taxonomic, and Conservation Implications". The Wilson Journal of Ornithology. 127 (4): 563–581. doi:10.1676/14-178.1. ISSN1559-4491. S2CID85682262.
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Sánchez-González, Luis A.; Navarro-Sigüenza, Adolfo G.; Krabbe, Niels K.; Fjeldså, Jon; García-Moreno, Jaime (2014-11-21). "Diversification in the Andes: the Atlapetes brush-finches". Zoologica Scripta. 44 (2): 135–152. doi:10.1111/zsc.12088. ISSN0300-3256. S2CID51735739.
Hosner, Peter A.; Andersen, Michael J.; Robbins, Mark B.; Urbay-Tello, Abraham; Cueto-Aparicio, Luis; Verde-Guerra, Karen; Sánchez-González, Luis A.; Navarro-Sigüenza, Adolfo G.; Boyd, Roger L. (Dec 2015). "Avifaunal Surveys of the Upper Apurímac River Valley, Ayacucho and Cuzco Departments, Peru: New Distributional Records and Biogeographic, Taxonomic, and Conservation Implications". The Wilson Journal of Ornithology. 127 (4): 563–581. doi:10.1676/14-178.1. ISSN1559-4491. S2CID85682262.
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Sánchez-González, Luis A.; Navarro-Sigüenza, Adolfo G.; Krabbe, Niels K.; Fjeldså, Jon; García-Moreno, Jaime (2014-11-21). "Diversification in the Andes: the Atlapetes brush-finches". Zoologica Scripta. 44 (2): 135–152. doi:10.1111/zsc.12088. ISSN0300-3256. S2CID51735739.
Hosner, Peter A.; Andersen, Michael J.; Robbins, Mark B.; Urbay-Tello, Abraham; Cueto-Aparicio, Luis; Verde-Guerra, Karen; Sánchez-González, Luis A.; Navarro-Sigüenza, Adolfo G.; Boyd, Roger L. (Dec 2015). "Avifaunal Surveys of the Upper Apurímac River Valley, Ayacucho and Cuzco Departments, Peru: New Distributional Records and Biogeographic, Taxonomic, and Conservation Implications". The Wilson Journal of Ornithology. 127 (4): 563–581. doi:10.1676/14-178.1. ISSN1559-4491. S2CID85682262.