United Nations. Dept. of Economic and Social Affairs. (1966). Transport of materials in bulk or in containers by pipe-lines. s.n.
Chicago-referens (17:e uppl.)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-referens (9:e uppl.)United Nations. Dept. of Economic and Social Affairs. Transport of Materials in Bulk or in Containers by Pipe-lines. s.n, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.