Middaugh, D., & DuPrau, J. (2012). The city of Ember: The graphic novel (First edition.). Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMiddaugh, Dallas, और Jeanne DuPrau. The City of Ember: The Graphic Novel. First edition. New York: Random House, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMiddaugh, Dallas, और Jeanne DuPrau. The City of Ember: The Graphic Novel. First edition. Random House, 2012.
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