United States. Technical Committee on Industrial Classification & United States. Bureau of the Budget. Office of Statistical Standards. (1957). Standard industrial classification manual. Executive Office of the President, Bureau of the Budget.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Technical Committee on Industrial Classification और United States. Bureau of the Budget. Office of Statistical Standards. Standard Industrial Classification Manual. Washington, D.C.: Executive Office of the President, Bureau of the Budget, 1957.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited States. Technical Committee on Industrial Classification और United States. Bureau of the Budget. Office of Statistical Standards. Standard Industrial Classification Manual. Executive Office of the President, Bureau of the Budget, 1957.