United Nations Industrial Development Organization. (1975). Guidelines for contracting for industrial projects in developing countries. United Nations.
Citazione stile Chigago Style (17a edizione)United Nations Industrial Development Organization. Guidelines for Contracting for Industrial Projects in Developing Countries. New York: United Nations, 1975.
Citatione MLA (9a ed.)United Nations Industrial Development Organization. Guidelines for Contracting for Industrial Projects in Developing Countries. United Nations, 1975.
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