Não informado. (1935). Architectural concrete. Portland Cement Association.
Chicagoスタイル(17版)引用形式Não informado. Architectural Concrete. Chicago, Ill: Portland Cement Association, 1935.
MLA(8版)引用形式Não informado. Architectural Concrete. Portland Cement Association, 1935.
警告: この引用は必ずしも正確ではありません.