Callaghan, J. (1992). Costing for contracts. Directory of cocial change.
Chicagoスタイル(17版)引用形式Callaghan, John. Costing for Contracts. London: Directory of cocial change, 1992.
MLA(8版)引用形式Callaghan, John. Costing for Contracts. Directory of cocial change, 1992.
警告: この引用は必ずしも正確ではありません.