APA (7th ed.) Citation

Evans, W. C., Trease, G. E., & Evans, D. (2002). Trease and Evans pharmacognosy (Fifteenth edition.). W.B. Saunders.

Chicago Style (17th ed.) Citation

Evans, William Charles, George Edward Trease, and Daphne Evans. Trease and Evans Pharmacognosy. Fifteenth edition. Edinburgh ; New York: W.B. Saunders, 2002.

MLA (9th ed.) Citation

Evans, William Charles, et al. Trease and Evans Pharmacognosy. Fifteenth edition. W.B. Saunders, 2002.