APA (7th ed.) Citation

Sibley, C. G., & Monroe, B. L. (1990). Distribution and taxonomy of birds of the world. Yale Univ. Press.

Chicago Style (17th ed.) Citation

Sibley, Charles G., and Burt L. Monroe. Distribution and Taxonomy of Birds of the World. New Haven u.a: Yale Univ. Press, 1990.

MLA (9th ed.) Citation

Sibley, Charles G., and Burt L. Monroe. Distribution and Taxonomy of Birds of the World. Yale Univ. Press, 1990.