Style de citation APA (7e éd.)

Howell, S. N. G., & Webb, S. (1995). A guide to the birds of Mexico and Northern Central America. Oxford University Press.

Style de citation Chicago (17e éd.)

Howell, Steve N. G., et Sophie Webb. A Guide to the Birds of Mexico and Northern Central America. Oxford ; New York: Oxford University Press, 1995.

Style de citation MLA (8e éd.)

Howell, Steve N. G., et Sophie Webb. A Guide to the Birds of Mexico and Northern Central America. Oxford University Press, 1995.