APA (7th ed.) Citation

United States. Bureau of Narcotics. (1940). Traffic in Opium and Other Dangerous Drugs, For the Year Ended Dec. 31, 1939. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Narcotics. Traffic in Opium and Other Dangerous Drugs, For the Year Ended Dec. 31, 1939. [Washington]: [publisher not identified], 1940.

MLA (9th ed.) Citation

United States. Bureau of Narcotics. Traffic in Opium and Other Dangerous Drugs, For the Year Ended Dec. 31, 1939. [publisher not identified], 1940.

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