Não informado. (1909). Structural Engineer. Institution of Structural Engineers.
Chicagoスタイル(17版)引用形式Não informado. Structural Engineer. London: Institution of Structural Engineers, 1909.
MLA(8版)引用形式Não informado. Structural Engineer. Institution of Structural Engineers, 1909.
警告: この引用は必ずしも正確ではありません.