Ridgely, R. S., & Gwynne, J. A. (1989). A guide to the birds of Panama: With Costa Rica, Nicaragua, and Honduras (2a. edición.). New Jersey: Princeton University.
Chicago Style CitationRidgely, Robert S., and John A. Gwynne. A Guide to the Birds of Panama: With Costa Rica, Nicaragua, and Honduras. 2a. edición. New Jersey: Princeton University, 1989.
MLA CitationRidgely, Robert S., and John A. Gwynne. A Guide to the Birds of Panama: With Costa Rica, Nicaragua, and Honduras. 2a. edición. New Jersey: Princeton University, 1989.
Warning: These citations may not always be 100% accurate.