APA (7th ed.) Citation

Willis, J. C., & Shaw, H. K. A. (1966). A dictionary of the flowering plants and ferns (7th ed.). University Press.

Chicago Style (17th ed.) Citation

Willis, J. C., and Herbert Kenneth Airy Shaw. A Dictionary of the Flowering Plants and Ferns. 7th ed. Cambridge: University Press, 1966.

MLA (8th ed.) Citation

Willis, J. C., and Herbert Kenneth Airy Shaw. A Dictionary of the Flowering Plants and Ferns. 7th ed. University Press, 1966.