Não informado. (1961). The Tool & Manufacturing Engineer. American Society of Tool and Manufacturing Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The Tool & Manufacturing Engineer. Dearborn, Mich: American Society of Tool and Manufacturing Engineers, 1961.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The Tool & Manufacturing Engineer. American Society of Tool and Manufacturing Engineers, 1961.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.