Portland Cement Association (U.S.). (1975). Laboratory and exercise manual on concrete construction. Wiley.
Lua i Stíl Chicago (17ú heag.)Portland Cement Association (U.S.). Laboratory and Exercise Manual on Concrete Construction. New York: Wiley, 1975.
Lua MLA (8ú heag.)Portland Cement Association (U.S.). Laboratory and Exercise Manual on Concrete Construction. Wiley, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.