APA (7th ed.) Citation

Field Museum of Natural History, Burger, W. C., & Huft, M. (1999). Flora Costaricensis. Field Museum of Natural History.

Chicago Style (17th ed.) Citation

Field Museum of Natural History, William C. Burger, and Michael Huft. Flora Costaricensis. Chicago, Ill.: Field Museum of Natural History, 1999.

MLA (9th ed.) Citation

Field Museum of Natural History, et al. Flora Costaricensis. Field Museum of Natural History, 1999.