Não informado. (2018). Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service.
Chicago-referens (17:e uppl.)Não informado. Outlook for U.S. Agricultural Exports. Washington: U.S. Department of Agriculture, Economic Research Service, 2018.
MLA-referens (8:e uppl.)Não informado. Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.