Não informado. (1958). Industrialization and Productivity. United Nations, Department of Economic and Social Affairs.
Chicago-Zitierstil (17. Ausg.)Não informado. Industrialization and Productivity. New York: United Nations, Department of Economic and Social Affairs, 1958.
MLA-Zitierstil (8. Ausg.)Não informado. Industrialization and Productivity. United Nations, Department of Economic and Social Affairs, 1958.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.