United Nations Industrial Development Organization. (1978). Manual for the preparation of industrial feasibility studies. United Nations.
Chicago-referens (17:e uppl.)United Nations Industrial Development Organization. Manual for the Preparation of Industrial Feasibility Studies. New York: United Nations, 1978.
MLA-referens (8:e uppl.)United Nations Industrial Development Organization. Manual for the Preparation of Industrial Feasibility Studies. United Nations, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.