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Fuchs, J.; Pons, J.M. (2015). "A new classification of the pied woodpeckers assemblage (Dendropicini, Picidae) based on a comprehensive multi-locus phylogeny". Molecular Phylogenetics and Evolution. 88: 28–37. Bibcode:2015MolPE..88...28F. doi:10.1016/j.ympev.2015.03.016. PMID25818851.
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Fuchs, J.; Pons, J.M. (2015). "A new classification of the pied woodpeckers assemblage (Dendropicini, Picidae) based on a comprehensive multi-locus phylogeny". Molecular Phylogenetics and Evolution. 88: 28–37. Bibcode:2015MolPE..88...28F. doi:10.1016/j.ympev.2015.03.016. PMID25818851.
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Jackson, J.A.; Ouellet, J.R.; Jackson, B.J. (2020). Rodewald, P.G. (ed.). "Hairy Woodpecker (Dryobates villosus), version 1.0". Birds of the World. Ithaca, NY, USA: Cornell Lab of Ornithology. doi:10.2173/bow.haiwoo.01. S2CID216443209.
Moore, William S.; Weibel, Amy C. & Agius, Andrea (2006): Mitochondrial DNA phylogeny of the woodpecker genus Veniliornis (Picidae, Picinae) and related genera implies convergent evolution of plumage patterns. Biol. J. Linn. Soc. 87: 611–624. PDF fulltextArchived 2011-09-29 at the Wayback Machine
Moore, William S.; Weibel, Amy C. & Agius, Andrea (2006): Mitochondrial DNA phylogeny of the woodpecker genus Veniliornis (Picidae, Picinae) and related genera implies convergent evolution of plumage patterns. Biol. J. Linn. Soc. 87: 611–624. PDF fulltextArchived 2011-09-29 at the Wayback Machine
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