United Nations. Economic Commission for Europe. (1992). Management of plastic wastes in the ECE region. United Nations.
芝加哥风格引文United Nations. Economic Commission for Europe. Management of Plastic Wastes in the ECE Region. New York: United Nations, 1992.
MLA引文United Nations. Economic Commission for Europe. Management of Plastic Wastes in the ECE Region. United Nations, 1992.
警告：这些引文格式不一定是100％准确.