Concrete Society of Southern Africa. (1971). Concrete. Brooke/Patrick.
Chicagoスタイル(17版)引用形式Concrete Society of Southern Africa. Concrete. Bedfordview, Africa do Sul: Brooke/Patrick, 1971.
MLA(8版)引用形式Concrete Society of Southern Africa. Concrete. Brooke/Patrick, 1971.
警告: この引用は必ずしも正確ではありません.