Não informado. (2004). International civil engineer and contractor. [s.n.].
Chicagoスタイル(17版)引用形式Não informado. International Civil Engineer and Contractor. London: [s.n.], 2004.
MLA(8版)引用形式Não informado. International Civil Engineer and Contractor. [s.n.], 2004.
警告: この引用は必ずしも正確ではありません.