Não informado. (1937). Tobacco situation. U.S. Department of Agriculture, Agricultural Marketing Service.
Cita Chicago Style (17a ed.)Não informado. Tobacco Situation. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1937.
Cita MLA (8a ed.)Não informado. Tobacco Situation. U.S. Department of Agriculture, Agricultural Marketing Service, 1937.
Precaución: Estas citas no son 100% exactas.