APA (7th ed.) Citation

United States. Bureau of Narcotics. (1944). The opium poppy and other poppies. U.S. Govt. print. off..

Chicago Style (17th ed.) Citation

United States. Bureau of Narcotics. The Opium Poppy and Other Poppies. Washington: U.S. Govt. print. off., 1944.

MLA (8th ed.) Citation

United States. Bureau of Narcotics. The Opium Poppy and Other Poppies. U.S. Govt. print. off., 1944.

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