Hilty, S., & Brown, W. L. (1986). A guide to the birds of Colombia. Princeton: Princeton University.
Chicago Style CitationHilty, Steven, and William L. Brown. A Guide to the Birds of Colombia. Princeton: Princeton University, 1986.
MLA CitationHilty, Steven, and William L. Brown. A Guide to the Birds of Colombia. Princeton: Princeton University, 1986.
Warning: These citations may not always be 100% accurate.