Não informado. (1938). Building materials and structures report. U.S. Department of Commerce, National Bureau of Standards.
Chicago-referens (17:e uppl.)Não informado. Building Materials and Structures Report. Washington: U.S. Department of Commerce, National Bureau of Standards, 1938.
MLA-referens (8:e uppl.)Não informado. Building Materials and Structures Report. U.S. Department of Commerce, National Bureau of Standards, 1938.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.