United Nations Industrial Development Organization. (1978). Manual for the preparation of industrial feasibility studies. United Nations.
Citazione stile Chigago Style (17a edizione)United Nations Industrial Development Organization. Manual for the Preparation of Industrial Feasibility Studies. New York: United Nations, 1978.
Citatione MLA (8a ed.)United Nations Industrial Development Organization. Manual for the Preparation of Industrial Feasibility Studies. United Nations, 1978.
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