↑Gauthier, J., and de Queiroz, K。 (2001)。 "Feathered dinosaurs, flying dinosaurs, crown dinosaurs, and the name Aves." Pp. 7–41怹New perspectives on the origin and early evolution of birds: proceedings of the International Symposium in Honor of John H。 Ostrom (J。 A。 Gauthier and L。 F。 Gall, eds.)。 Peabody Museum of Natural History, Yale University, New Haven, Connecticut, U.S.A.
↑Mayr, Ernst; Short, Lester L. (1970). Species Taxa of North American Birds: A Contribution to Comparative Systematics. Publications of the Nuttall Ornithological Club, no. 9. Cambridge, Mass.: Nuttall Ornithological Club. OCLC517185.
↑Yuri, T.; et al. (2013). "Parsimony and Model-Based Analyses of Indels in Avian Nuclear Genes Reveal Congruent and Incongruent Phylogenetic Signals". Biology. 2 (1): 419–444. doi:10.3390/biology2010419.
↑Brooke, Michael (2004). Albatrosses And Petrels Across The World. Oxford: Oxford University Press. ISBN0-19-850125-0.
↑Ehrlich, Paul R.; David S. Dobkin; Darryl Wheye (1988). "Adaptations for Flight". Birds of Stanford. Stanford University. 13 December 2007 khòaⁿ--ê. Based on The Birder's Handbook (Paul Ehrlich, David Dobkin, and Darryl Wheye. 1988. Simon and Schuster, New York.)