United Nations Statistical Office & United Nations Statistical Office. (1958). International standard industrial classification of all economic activities. [s.n.].
Citazione stile Chigago Style (17a edizione)United Nations Statistical Office e United Nations Statistical Office. International Standard Industrial Classification of All Economic Activities. New York: [s.n.], 1958.
Citatione MLA (9a ed.)United Nations Statistical Office e United Nations Statistical Office. International Standard Industrial Classification of All Economic Activities. [s.n.], 1958.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.