Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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