BirdLife International, International Union for Conservation of Nature and Natural Resources, Stattersfield, A. J., Capper, D. R., & Dutson, G. C. L. (2000). Threatened birds of the world: The official source for birds on the IUCN red list. BirdLife International ; Lynx Edicions.
Chicago Style (17th ed.) CitationBirdLife International, International Union for Conservation of Nature and Natural Resources, A. J. Stattersfield, David R. Capper, and Guy C. L. Dutson. Threatened Birds of the World: The Official Source for Birds on the IUCN Red List. Cambridge, UK : Barcelona: BirdLife International ; Lynx Edicions, 2000.
MLA (9th ed.) CitationBirdLife International, et al. Threatened Birds of the World: The Official Source for Birds on the IUCN Red List. BirdLife International ; Lynx Edicions, 2000.