Wistar, R. (1963). Man and his physical universe (2d ed.). Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWistar, Richard. Man and His Physical Universe. 2d ed. New York: Wiley, 1963.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWistar, Richard. Man and His Physical Universe. 2d ed. Wiley, 1963.
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