Não informado. (1975). Agricultural Outlook. U.S. Department of Agriculture, Economic Research Service.
Cita Chicago Style (17a ed.)Não informado. Agricultural Outlook. Washington: U.S. Department of Agriculture, Economic Research Service, 1975.
Cita MLA (8a ed.)Não informado. Agricultural Outlook. U.S. Department of Agriculture, Economic Research Service, 1975.
Precaución: Estas citas no son 100% exactas.