Pygochelidon (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pygochelidon" in English language version.

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biodiversitylibrary.org

Baird, Spencer F. (1864). Review of American Birds in the Museum of the Smithsonian Institution. Vol. Part 1, North and Middle America. Washington: Smithsonian Institution. pp. 270, 308.
Mayr, Ernst; Greenway, James C. Jr, eds. (1960). Check-List of Birds of the World. Vol. 9. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 88.

Sheldon, F.H.; Whittingham, L.A.; Moyle, R.G.; Slikas, B.; Winkler, D.W. (2005). "Phylogeny of swallows (Aves: Hirundinidae) estimated from nuclear and mitochondrial DNA sequencing". Molecular Phylogenetics and Evolution. 35 (1): 254–270. Bibcode:2005MolPE..35..254S. doi:10.1016/j.ympev.2004.11.008. PMID 15737595.

Sheldon, F.H.; Whittingham, L.A.; Moyle, R.G.; Slikas, B.; Winkler, D.W. (2005). "Phylogeny of swallows (Aves: Hirundinidae) estimated from nuclear and mitochondrial DNA sequencing". Molecular Phylogenetics and Evolution. 35 (1): 254–270. Bibcode:2005MolPE..35..254S. doi:10.1016/j.ympev.2004.11.008. PMID 15737595.

Sheldon, F.H.; Whittingham, L.A.; Moyle, R.G.; Slikas, B.; Winkler, D.W. (2005). "Phylogeny of swallows (Aves: Hirundinidae) estimated from nuclear and mitochondrial DNA sequencing". Molecular Phylogenetics and Evolution. 35 (1): 254–270. Bibcode:2005MolPE..35..254S. doi:10.1016/j.ympev.2004.11.008. PMID 15737595.

Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2021). "Swallows". IOC World Bird List Version 11.2. International Ornithologists' Union. Retrieved 19 July 2021.