United Nations Statistical Office & United Nations Statistical Office. (1958). International standard industrial classification of all economic activities. [s.n.].
Chicago Style (17th ed.) CitationUnited Nations Statistical Office and United Nations Statistical Office. International Standard Industrial Classification of All Economic Activities. New York: [s.n.], 1958.
MLA引文United Nations Statistical Office and United Nations Statistical Office. International Standard Industrial Classification of All Economic Activities. [s.n.], 1958.
警告：這些引文格式不一定是100％准確.