Franklin

MLA

DeVries, Philio J., and Jennifer Clark. The Butterflies of Costa Rica and Their Natural History : Papilionidae, Pieridae, Nymphalidae. Princeton, N.J.: Princeton University Press, 1987.

APA

DeVries, P. J., & Clark, J. (1987). The butterflies of Costa Rica and their natural history : Papilionidae, Pieridae, Nymphalidae. Princeton, N.J.: Princeton University Press.

Chicago

DeVries, Philio J., and Jennifer Clark. The Butterflies of Costa Rica and Their Natural History: Papilionidae, Pieridae, Nymphalidae. Princeton, N.J.: Princeton University Press, 1987.