APA (7th ed.) Citation

Claus, E. P., & Tyler, V. E. (1965). Pharmacognosy (5th edition.). Lea & Febiger.

Chicago Style (17th ed.) Citation

Claus, Edward P., and Varro E. Tyler. Pharmacognosy. 5th edition. Philadelphia: Lea & Febiger, 1965.

MLA (8th ed.) Citation

Claus, Edward P., and Varro E. Tyler. Pharmacognosy. 5th edition. Lea & Febiger, 1965.