United Nations Statistical Office & United Nations Statistical Office. (1958). International standard industrial classification of all economic activities. [s.n.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations Statistical Office और United Nations Statistical Office. International Standard Industrial Classification of All Economic Activities. New York: [s.n.], 1958.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations Statistical Office और United Nations Statistical Office. International Standard Industrial Classification of All Economic Activities. [s.n.], 1958.
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