Não informado. (1938). Building materials and structures report. U.S. Department of Commerce, National Bureau of Standards.
Lua i Stíl Chicago (17ú heag.)Não informado. Building Materials and Structures Report. Washington: U.S. Department of Commerce, National Bureau of Standards, 1938.
Lua MLA (8ú heag.)Não informado. Building Materials and Structures Report. U.S. Department of Commerce, National Bureau of Standards, 1938.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.