United States. Dept. of Agriculture. Economic Research Service, United States. World Agricultural Outlook Board, United States. Dept. of Agriculture. Economics and Statistics Service, & United States. World Food and Agricultural Outlook and Situation Board. (1981). Outlook & situation. The Service.
Citazione stile Chigago Style (17a edizione)United States. Dept. of Agriculture. Economic Research Service, United States. World Agricultural Outlook Board, United States. Dept. of Agriculture. Economics and Statistics Service, e United States. World Food and Agricultural Outlook and Situation Board. Outlook & Situation. [Washington, D.C.]: The Service, 1981.
Citatione MLA (8a ed.)United States. Dept. of Agriculture. Economic Research Service, et al. Outlook & Situation. The Service, 1981.