United Nations Industrial Development Organization. (1978). Technologies from developing countries. United Nations.
Cita Chicago (17th ed.)United Nations Industrial Development Organization. Technologies from Developing Countries. New York: United Nations, 1978.
Cita MLA (8th ed.)United Nations Industrial Development Organization. Technologies from Developing Countries. United Nations, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.