Cita APA

Tyler, V. E., Brady, L. R. 1., & Robbers, J. E. (1981). Pharmacognosy (8 edition.). Philadelphia: Lea & Febiger.

Citación estilo Chicago

Tyler, Varro E., Lynn R. 1933- Brady, y James E. Robbers. Pharmacognosy. 8 edition. Philadelphia: Lea & Febiger, 1981.

Cita MLA

Tyler, Varro E., Lynn R. 1933- Brady, y James E. Robbers. Pharmacognosy. 8 edition. Philadelphia: Lea & Febiger, 1981.