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Page, R. D. M., Lee, P. L. M., Becher, S.A., Griffiths, R., Clayton D. H. (1997). "A Different Tempo of Evolution in Birds and their Parasitic Lice" Text retrieved 12 Nov 2007Archivado el 28 de mayo de 2008 en Wayback Machine.
Steadman, David W (julio de 2002). «A new species of swiftlet (Aves: Apodidae) from the late Quaternary of Mangaia, Cook Islands, Oceania». Journal of Vertebrate Paleontology22 (22): 326-331. ISSN0272-4634. doi:10.1671/0272-4634(2002)022[0326:ANSOSA]2.0.CO;2.
Page, R. D. M., Lee, P. L. M., Becher, S.A., Griffiths, R., Clayton D. H. (1997). "A Different Tempo of Evolution in Birds and their Parasitic Lice" Text retrieved 12 Nov 2007Archivado el 28 de mayo de 2008 en Wayback Machine.