Sagan, C. (1997). The demon-haunted world: Science as a candle in the dark (1st Ballantine Books ed.). Ballantine Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSagan, Carl. The Demon-haunted World: Science as a Candle in the Dark. 1st Ballantine Books ed. New York: Ballantine Books, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSagan, Carl. The Demon-haunted World: Science as a Candle in the Dark. 1st Ballantine Books ed. Ballantine Books, 1997.
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