United States. Dept. of Agriculture. Economic Research Service, United States. Agricultural Marketing Service, United States. Dept. of Agriculture. Economics and Statistics Service, United States. Dept. of Agriculture. Economics, Statistics, and Cooperatives Service, & United States. Bureau of Agricultural Economics. Wheat situation. The Service,.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Dept. of Agriculture. Economic Research Service, United States. Agricultural Marketing Service, United States. Dept. of Agriculture. Economics and Statistics Service, Statistics United States. Dept. of Agriculture. Economics, و United States. Bureau of Agricultural Economics. Wheat Situation. [Washington, D.C.]: The Service,.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Dept. of Agriculture. Economic Research Service, et al. Wheat Situation. The Service,.