Egretta sacra (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Egretta sacra" in Spanish language version.

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iucnredlist.org

Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, and C. L. Wood. 2010. The Clements checklist of birds of the world: Version 6.5. Cornell University Press. Downloadable from Cornell Lab of Ornithology
Peterson, A. P. 2010. Birds of the World -- current valid scientific avian names. Consultado en enero de 2011.