United States. Dept. of Agriculture. Economic Research Service, United States. Agricultural Marketing Service, & United States. Bureau of Agricultural Economics. National food situation. Economic Research Service, U.S. Dept. of Agriculture [etc.].
芝加哥风格引文United States. Dept. of Agriculture. Economic Research Service, United States. Agricultural Marketing Service, 与 United States. Bureau of Agricultural Economics. National Food Situation. [Washington]: Economic Research Service, U.S. Dept. of Agriculture [etc.].
MLA引文United States. Dept. of Agriculture. Economic Research Service, et al. National Food Situation. Economic Research Service, U.S. Dept. of Agriculture [etc.].
警告：这些引文格式不一定是100％准确.