Não informado. (1962). Concrete paving. Portland Cement Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Concrete Paving. Chicago, Ill: Portland Cement Association, 1962.
Lua MLA (8ú heag.)Não informado. Concrete Paving. Portland Cement Association, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
