APA (7th ed.) Citation

Howard, M. E. (1952). Modern drug encyclopedia and therapeutic index (5th ed.). Drug Publications.

Chicago Style (17th ed.) Citation

Howard, Marion E. Modern Drug Encyclopedia and Therapeutic Index. 5th ed. New York: Drug Publications, 1952.

MLA (8th ed.) Citation

Howard, Marion E. Modern Drug Encyclopedia and Therapeutic Index. 5th ed. Drug Publications, 1952.