Campagna, L.; Geale, K.; Handford, P.; Lijtmaer, D.A.; Tubaro, P.L.; Lougheed, S.C. (2011). "A molecular phylogeny of the Sierra-Finches (Phrygilus, Passeriformes): Extreme polyphyly in a group of Andean specialists". Molecular Phylogenetics and Evolution. 61 (2): 521–533. doi:10.1016/j.ympev.2011.07.011. hdl:11336/68885. PMID21807104.
Domínguez, Marisol; Reboreda, Juan Carlos; Mahler, Bettina (2016). "Effects of fragmentation and hybridization on geographical patterns of song variation in the endangered Yellow Cardinal Gubernatrix cristata". Ibis. 158 (4): 738–746. doi:10.1111/ibi.12388. hdl:11336/61397. ISSN1474-919X.
Campagna, L.; Geale, K.; Handford, P.; Lijtmaer, D.A.; Tubaro, P.L.; Lougheed, S.C. (2011). "A molecular phylogeny of the Sierra-Finches (Phrygilus, Passeriformes): Extreme polyphyly in a group of Andean specialists". Molecular Phylogenetics and Evolution. 61 (2): 521–533. doi:10.1016/j.ympev.2011.07.011. hdl:11336/68885. PMID21807104.
Domínguez, Marisol; Reboreda, Juan Carlos; Mahler, Bettina (2016). "Effects of fragmentation and hybridization on geographical patterns of song variation in the endangered Yellow Cardinal Gubernatrix cristata". Ibis. 158 (4): 738–746. doi:10.1111/ibi.12388. hdl:11336/61397. ISSN1474-919X.
Campagna, L.; Geale, K.; Handford, P.; Lijtmaer, D.A.; Tubaro, P.L.; Lougheed, S.C. (2011). "A molecular phylogeny of the Sierra-Finches (Phrygilus, Passeriformes): Extreme polyphyly in a group of Andean specialists". Molecular Phylogenetics and Evolution. 61 (2): 521–533. doi:10.1016/j.ympev.2011.07.011. hdl:11336/68885. PMID21807104.
Domínguez, Marisol; Reboreda, Juan Carlos; Mahler, Bettina (2016). "Effects of fragmentation and hybridization on geographical patterns of song variation in the endangered Yellow Cardinal Gubernatrix cristata". Ibis. 158 (4): 738–746. doi:10.1111/ibi.12388. hdl:11336/61397. ISSN1474-919X.