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.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումUnited 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.
MLA (9րդ խմբ.) ՄեջբերումUnited 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.