United Nations. Dept. of Economic and Social Affairs. (1966). Transport of materials in bulk or in containers by pipe-lines. s.n.
芝加哥风格引文United Nations. Dept. of Economic and Social Affairs. Transport of Materials in Bulk or in Containers by Pipe-lines. New York: s.n, 1966.
MLA引文United Nations. Dept. of Economic and Social Affairs. Transport of Materials in Bulk or in Containers by Pipe-lines. s.n, 1966.
警告：这些引文格式不一定是100％准确.