APA (7th ed.) Citation

United States. Public Health Service. (1939). Kolb classification of drug addicts. [s.n.].

Chicago Style (17th ed.) Citation

United States. Public Health Service. Kolb Classification of Drug Addicts. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Public Health Service. Kolb Classification of Drug Addicts. [s.n.], 1939.

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