Não informado. (1939). Consulting engineer. Northwood Publications.
Chicagoスタイル(17版)引用形式Não informado. Consulting Engineer. London: Northwood Publications, 1939.
MLA(8版)引用形式Não informado. Consulting Engineer. Northwood Publications, 1939.
警告: この引用は必ずしも正確ではありません.