Não informado. (1974). International journal of powder metallurgy and powder technology. American Powder Metallurgy Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Powder Metallurgy and Powder Technology. Princeton, NJ: American Powder Metallurgy Institute, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Powder Metallurgy and Powder Technology. American Powder Metallurgy Institute, 1974.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.