United Nations Industrial Development Organization. (1976). Information sources on the machine tool industry. United Nations.
Chicago-referens (17:e uppl.)United Nations Industrial Development Organization. Information Sources on the Machine Tool Industry. New York: United Nations, 1976.
MLA-referens (9:e uppl.)United Nations Industrial Development Organization. Information Sources on the Machine Tool Industry. United Nations, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.