APA (7th ed.) Citation
Gargiullo, M. B., Magnuson, B. L., & Kimball, L. D. (2008). A field guide to plants of Costa Rica. Oxford University Press.
Chicago Style (17th ed.) Citation
Gargiullo, Margaret B., Barbara L. Magnuson, and Larry D. Kimball. A Field Guide to Plants of Costa Rica. Oxford ; New York: Oxford University Press, 2008.
MLA (9th ed.) Citation
Gargiullo, Margaret B., et al. A Field Guide to Plants of Costa Rica. Oxford University Press, 2008.
Warning: These citations may not always be 100% accurate.