Não informado. (1956). Cost engineering. Industrial Research Service.
Chicagoスタイル(17版)引用形式Não informado. Cost Engineering. Dover, N.H: Industrial Research Service, 1956.
MLA(8版)引用形式Não informado. Cost Engineering. Industrial Research Service, 1956.
警告: この引用は必ずしも正確ではありません.