APA (7th ed.) Citation

Howard, R., Moore, A., & Brown, L. H. (1980). A complete checklist of the birds of the world. Oxford University Press.

Chicago Style (17th ed.) Citation

Howard, Richard, Alick Moore, and Leslie Hilton Brown. A Complete Checklist of the Birds of the World. Oxford [etc.]: Oxford University Press, 1980.

MLA (9th ed.) Citation

Howard, Richard, et al. A Complete Checklist of the Birds of the World. Oxford University Press, 1980.