Cita APA (7th ed.)

Tyler, V. E., By, B. ., & Robbers , J. E. (1981). Pharmacognosy (8th ed.). Lea & Febiger.

Cita Chicago (17th ed.)

Tyler, Varro E., Brady By, i James E. Robbers. Pharmacognosy. 8th ed. Philadelphia: Lea & Febiger, 1981.

Cita MLA (9th ed.)

Tyler, Varro E., et al. Pharmacognosy. 8th ed. Lea & Febiger, 1981.