APA (7th ed.) Citation

(2020). Birds of the world. Cornell Lab of Ornithology.

Chicago Style (17th ed.) Citation

Birds of the World. [Ithaca, New York]: Cornell Lab of Ornithology, 2020.

MLA (9th ed.) Citation

Birds of the World. Cornell Lab of Ornithology, 2020.

Warning: These citations may not always be 100% accurate.