United Nations Industrial Development Organization. (1976). Information sources on the machine tool industry. United Nations.
芝加哥风格引文United Nations Industrial Development Organization. Information Sources on the Machine Tool Industry. New York: United Nations, 1976.
MLA引文United Nations Industrial Development Organization. Information Sources on the Machine Tool Industry. United Nations, 1976.
警告：这些引文格式不一定是100％准确.