Não informado. (1940). Engineers digest: Review of engineering progress. Engineer's Digest Publications.
Chicagoスタイル(17版)引用形式Não informado. Engineers Digest: Review of Engineering Progress. London: Engineer's Digest Publications, 1940.
MLA(8版)引用形式Não informado. Engineers Digest: Review of Engineering Progress. Engineer's Digest Publications, 1940.
警告: この引用は必ずしも正確ではありません.