Não informado. (1935). Architectural concrete. Portland Cement Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Architectural Concrete. Chicago, Ill: Portland Cement Association, 1935.
Lua MLA (8ú heag.)Não informado. Architectural Concrete. Portland Cement Association, 1935.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.