Cita APA

tyler, V. E., Brady, L. R., & Robbers Lames E. (1988). Pharmacognosy (9th.). USA.

Citación estilo Chicago

tyler, Varro E., Lynn R. Brady, and Robbers Lames E. Pharmacognosy. 9th. Lea & Febiger: USA, 1988.

Cita MLA

tyler, Varro E., et al. Pharmacognosy. 9th. USA, 1988.