APA (7th ed.) Citation

Wallis, T. E. (1953). Practical pharmacognosy (16th ed.). Churchill.

Chicago Style (17th ed.) Citation

Wallis, T. E. Practical Pharmacognosy. 16th ed. London: Churchill, 1953.

MLA (9th ed.) Citation

Wallis, T. E. Practical Pharmacognosy. 16th ed. Churchill, 1953.

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