APA (7th ed.) Citation

Gilbert, N. W. (1977). Opium poppy research in the southwestern United States, 1945-66. Dept. of Agriculture, Agricultural Research Service, Western Region.

Chicago Style (17th ed.) Citation

Gilbert, Norris W. Opium Poppy Research in the Southwestern United States, 1945-66. [Washington]: Dept. of Agriculture, Agricultural Research Service, Western Region, 1977.

MLA (9th ed.) Citation

Gilbert, Norris W. Opium Poppy Research in the Southwestern United States, 1945-66. Dept. of Agriculture, Agricultural Research Service, Western Region, 1977.