Não informado. (2003). Concrete building and concret products. Cement and Concrete Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Concrete Building and Concret Products. London: Cement and Concrete Association, 2003.
MLA-Zitierstil (8. Ausg.)Não informado. Concrete Building and Concret Products. Cement and Concrete Association, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.