(1964). Vol. 56, № 3; Industrial and Engineering Chemistry; Product research and development. 1964.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVol. 56, № 3; Industrial and Engineering Chemistry; Product Research and Development. 1964, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVol. 56, № 3; Industrial and Engineering Chemistry; Product Research and Development. 1964, 1964.
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