APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Howard, Richard, and Alick Moore. A Complete Checklist of the Birds of the World. Oxford: Oxford University, 1980.

MLA (9th ed.) Citation

Howard, Richard, and Alick Moore. A Complete Checklist of the Birds of the World. Oxford University, 1980.