Cita APA

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

Citación estilo Chicago

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

Cita MLA

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