Não informado. (1940). Engineers digest: Review of engineering progress. Engineer's Digest Publications.
Cita Chicago Style (17a ed.)Não informado. Engineers Digest: Review of Engineering Progress. London: Engineer's Digest Publications, 1940.
Cita MLA (8a ed.)Não informado. Engineers Digest: Review of Engineering Progress. Engineer's Digest Publications, 1940.
Precaución: Estas citas no son 100% exactas.