Não informado. (2003). Contractors record and municipal engineering. [s.n.].
Chicagoスタイル(17版)引用形式Não informado. Contractors Record and Municipal Engineering. [s.l.]: [s.n.], 2003.
MLA(8版)引用形式Não informado. Contractors Record and Municipal Engineering. [s.n.], 2003.
警告: この引用は必ずしも正確ではありません.