APA (7th ed.) Citation

Wallis, T. E. (1967). Textbook of pharmacognosy (5th ed.). Churchill.

Chicago Style (17th ed.) Citation

Wallis, T. E. Textbook of Pharmacognosy. 5th ed. London: Churchill, 1967.

MLA (9th ed.) Citation

Wallis, T. E. Textbook of Pharmacognosy. 5th ed. Churchill, 1967.

Warning: These citations may not always be 100% accurate.