Não informado. (1924). Agricultural situation. U.S. Department of Agriculture, Agricultural Marketing Service.
Style de citation Chicago (17e éd.)Não informado. Agricultural Situation. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1924.
Style de citation MLA (8e éd.)Não informado. Agricultural Situation. U.S. Department of Agriculture, Agricultural Marketing Service, 1924.
Attention : ces citations peuvent ne pas être correctes à 100%.