Não informado. Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service.
Citação do estilo Chicago (17ª ed.)Não informado. Outlook for U.S. Agricultural Exports. Washington: U.S. Department of Agriculture, Economic Research Service.
Citação MLA (8ª ed.)Não informado. Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service.
警告：这些引文格式不一定是100％准确.