United Nations Industrial Development Organization. (1972). Information sources on the meat processing industry. United Nations.
芝加哥风格引文United Nations Industrial Development Organization. Information Sources on the Meat Processing Industry. New York: United Nations, 1972.
MLA引文United Nations Industrial Development Organization. Information Sources on the Meat Processing Industry. United Nations, 1972.
警告：这些引文格式不一定是100％准确.