Cita APA (7a ed.)

Athanas, N., & Greenfield, P. J. (2016). Birds of Western Ecuador: A Photographic Guide. Princeton University Press.

Cita Chicago Style (17a ed.)

Athanas, Nick, y Paul J. Greenfield. Birds of Western Ecuador: A Photographic Guide. Princeton: Princeton University Press, 2016.

Cita MLA (8a ed.)

Athanas, Nick, y Paul J. Greenfield. Birds of Western Ecuador: A Photographic Guide. Princeton University Press, 2016.