APA (7th ed.) Citation

Dressler, R. L., & Dudley, T. R. (1993). Phylogeny and classification of the orchid family. Dioscorides Press.

Chicago Style (17th ed.) Citation

Dressler, Robert L., and Theodore R. Dudley. Phylogeny and Classification of the Orchid Family. Portland, Oregon: Dioscorides Press, 1993.

MLA (9th ed.) Citation

Dressler, Robert L., and Theodore R. Dudley. Phylogeny and Classification of the Orchid Family. Dioscorides Press, 1993.