APA (7th ed.) Citation

United States. National Recovery Administration. (1935). Amendment to supplementary code of fair competition for the roofing and sheet metal contracting industry (a division of the construction industry) as approved on March 20, 1935. United States Government Printing Office.

Chicago Style (17th ed.) Citation

United States. National Recovery Administration. Amendment to Supplementary Code of Fair Competition for the Roofing and Sheet Metal Contracting Industry (a Division of the Construction Industry) as Approved on March 20, 1935. Washington: United States Government Printing Office, 1935.

MLA (9th ed.) Citation

United States. National Recovery Administration. Amendment to Supplementary Code of Fair Competition for the Roofing and Sheet Metal Contracting Industry (a Division of the Construction Industry) as Approved on March 20, 1935. United States Government Printing Office, 1935.