APA (7th ed.) Citation

Claus, E. P., & Tyler, V. E. (1965). Pharmacognosy (5. ed., rev., repr.). Lea & Febiger.

Chicago Style (17th ed.) Citation

Claus, Edward P., and Varro E. Tyler. Pharmacognosy. 5. ed., rev., repr. Philadelphia: Lea & Febiger, 1965.

MLA (9th ed.) Citation

Claus, Edward P., and Varro E. Tyler. Pharmacognosy. 5. ed., rev., repr. Lea & Febiger, 1965.