Não informado. (2003). Concrete building and concret products. Cement and Concrete Association.
Chicagoスタイル(17版)引用形式Não informado. Concrete Building and Concret Products. London: Cement and Concrete Association, 2003.
MLA(8版)引用形式Não informado. Concrete Building and Concret Products. Cement and Concrete Association, 2003.
警告: この引用は必ずしも正確ではありません.