Burk, M. C. (1961). Trends and patterns in U.S. food consumption. U.S. Dept. of Agriculture, Economic Research Service, Economic and Statistical Analysis Division.
芝加哥风格引文Burk, Marguerite C. Trends and Patterns in U.S. Food Consumption. Washington, D.C.: U.S. Dept. of Agriculture, Economic Research Service, Economic and Statistical Analysis Division, 1961.
MLA引文Burk, Marguerite C. Trends and Patterns in U.S. Food Consumption. U.S. Dept. of Agriculture, Economic Research Service, Economic and Statistical Analysis Division, 1961.
警告：这些引文格式不一定是100％准确.