APA (7th ed.) Zitazioa

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.

Chicago Style (17th ed.) Zitazioa

United States. Technical Committee on Industrial Classification eta 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.

MLA (9th ed.) Zitazioa

United States. Technical Committee on Industrial Classification eta United States. Bureau of the Budget. Office of Statistical Standards. Standard Industrial Classification Manual. Executive Office of the President, Bureau of the Budget, 1957.

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