Não informado. (1958). Industrialization and Productivity. United Nations, Department of Economic and Social Affairs.
Citação do estilo Chicago (17ª ed.)Não informado. Industrialization and Productivity. New York: United Nations, Department of Economic and Social Affairs, 1958.
Citação MLA (8ª ed.)Não informado. Industrialization and Productivity. United Nations, Department of Economic and Social Affairs, 1958.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.