United Nations Centre for Industrial Development. (1979). Information sources on industrail maintenance and repair. United Nations.
Citazione stile Chigago Style (17a edizione)United Nations Centre for Industrial Development. Information Sources on Industrail Maintenance and Repair. New York: United Nations, 1979.
Citatione MLA (9a ed.)United Nations Centre for Industrial Development. Information Sources on Industrail Maintenance and Repair. United Nations, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.