Cita APA (7a ed.)

Tyler, V. E., Brady, L. R., & Robbers, J. E. (1988). Pharmacognosy (9th ed.). Lea & Febiger.

Cita Chicago Style (17a ed.)

Tyler, Varro E., Lynn R. Brady, y James E. Robbers. Pharmacognosy. 9th ed. Philadelphia: Lea & Febiger, 1988.

Cita MLA (9a ed.)

Tyler, Varro E., et al. Pharmacognosy. 9th ed. Lea & Febiger, 1988.