Não informado. (1975). Agricultural Outlook. U.S. Department of Agriculture, Economic Research Service.
Chicago-Zitierstil (17. Ausg.)Não informado. Agricultural Outlook. Washington: U.S. Department of Agriculture, Economic Research Service, 1975.
MLA-Zitierstil (8. Ausg.)Não informado. Agricultural Outlook. U.S. Department of Agriculture, Economic Research Service, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.