A dictionary of the flowering plants and ferns

MLA

Willis, J. C, and H. K. Airy Shaw. A Dictionary of the Flowering Plants and Ferns. 7th ed. Cambridge: Cambridge university press, 1966.

APA

Willis, J. C, & Shaw, H. K. Airy. (1966). A dictionary of the flowering plants and ferns. 7th ed. Cambridge: Cambridge university press.

Chicago

Willis, J. C., and H. K. Airy Shaw. A Dictionary of the Flowering Plants and Ferns. 7th ed. Cambridge: Cambridge university press, 1966.