Não informado. (2003). Concrete building and concret products. Cement and Concrete Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Concrete Building and Concret Products. London: Cement and Concrete Association, 2003.
Lua MLA (8ú heag.)Não informado. Concrete Building and Concret Products. Cement and Concrete Association, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.