APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (1925). Institution of Production Engineers Journal. Institution of Production Engineers.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Institution of Production Engineers Journal. London: Institution of Production Engineers, 1925.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Institution of Production Engineers Journal. Institution of Production Engineers, 1925.

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