Bernal, J. D. (1971). Science in history: Volume 2:the scientific and industrial revolutions (First edition.). The M.T.I Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBernal, J. D. Science in History: Volume 2:the Scientific and Industrial Revolutions. First edition. USA: The M.T.I Press, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBernal, J. D. Science in History: Volume 2:the Scientific and Industrial Revolutions. First edition. The M.T.I Press, 1971.
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