APA (7th ed.) Citation

Laurent, H., & Duffy, R. (1916). Personality: How to build it (Authorized ed.). Funk & Wagnalls.

Chicago Style (17th ed.) Citation

Laurent, Henri, and Richard Duffy. Personality: How to Build It. Authorized ed. New York: Funk & Wagnalls, 1916.

MLA (9th ed.) Citation

Laurent, Henri, and Richard Duffy. Personality: How to Build It. Authorized ed. Funk & Wagnalls, 1916.