DeVries, P. J. (1987). The butterflies of Costa Rica and their natural history: Papilionidae, pieridae, nymphalidae. New Jersey: Princeton University.
Chicago Style CitationDeVries, Philip J. The Butterflies of Costa Rica and Their Natural History: Papilionidae, Pieridae, Nymphalidae. New Jersey: Princeton University, 1987.
MLA CitationDeVries, Philip J. The Butterflies of Costa Rica and Their Natural History: Papilionidae, Pieridae, Nymphalidae. New Jersey: Princeton University, 1987.
Warning: These citations may not always be 100% accurate.