Não informado. (1979). Construction Contracting. Bobit Publishing.
Chicagoスタイル(17版)引用形式Não informado. Construction Contracting. Redondo Beach, Calif: Bobit Publishing, 1979.
MLA(8版)引用形式Não informado. Construction Contracting. Bobit Publishing, 1979.
警告: この引用は必ずしも正確ではありません.