Cita APA (7a ed.)

Tyler, V. E., Brady, L. R., Robbers, J. E., & Claus, E. P. (1976). Pharmacognosy (7th ed.). Lea & Febiger.

Cita Chicago Style (17a ed.)

Tyler, Varro E., Lynn R. Brady, James E. Robbers, y Edward P. Claus. Pharmacognosy. 7th ed. Philadelphia: Lea & Febiger, 1976.

Cita MLA (9a ed.)

Tyler, Varro E., et al. Pharmacognosy. 7th ed. Lea & Febiger, 1976.