Não informado. (1975). Agricultural Outlook. U.S. Department of Agriculture, Economic Research Service.
Style de citation Chicago (17e éd.)Não informado. Agricultural Outlook. Washington: U.S. Department of Agriculture, Economic Research Service, 1975.
Style de citation MLA (8e éd.)Não informado. Agricultural Outlook. U.S. Department of Agriculture, Economic Research Service, 1975.
Attention : ces citations peuvent ne pas être correctes à 100%.