United Nations Industrial Development Organization. (1972). Information sources on the leather and leather goods industry (Rev. ed.). United Nations.
Cita Chicago (17th ed.)United Nations Industrial Development Organization. Information Sources on the Leather and Leather Goods Industry. Rev. ed. New York: United Nations, 1972.
Cita MLA (9th ed.)United Nations Industrial Development Organization. Information Sources on the Leather and Leather Goods Industry. Rev. ed. United Nations, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.