Dyfyniad APA

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.

Dyfyniad Arddull Chicago

United States. Technical Committee on Industrial Classification and 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.

Dyfyniad MLA

United States. Technical Committee on Industrial Classification and 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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