United Nations Industrial Development Organization. (1972). Information sources on the leather and leather goods industry. United Nations.
Chicago-referens (17:e uppl.)United Nations Industrial Development Organization. Information Sources on the Leather and Leather Goods Industry. New York: United Nations, 1972.
MLA-referens (9:e uppl.)United Nations Industrial Development Organization. Information Sources on the Leather and Leather Goods Industry. United Nations, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.