Não informado. (1925). Institution of Production Engineers Journal. Institution of Production Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Institution of Production Engineers Journal. London: Institution of Production Engineers, 1925.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Institution of Production Engineers Journal. Institution of Production Engineers, 1925.
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