APA (7th ed.) Citation

Evans, W. C., Evans, D., & Trease, G. E. (2009). Trease and Evans pharmacognosy (16th ed.). Saunders/Elsevier.

Chicago Style (17th ed.) Citation

Evans, William Charles, Daphne Evans, and George Edward Trease. Trease and Evans Pharmacognosy. 16th ed. Edinburgh, New York: Saunders/Elsevier, 2009.

MLA (9th ed.) Citation

Evans, William Charles, et al. Trease and Evans Pharmacognosy. 16th ed. Saunders/Elsevier, 2009.