Schwartz, A. (2012). Lucy can't sleep. Roaring Brook Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchwartz, Amy. Lucy Can't Sleep. New York: Roaring Brook Press, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchwartz, Amy. Lucy Can't Sleep. Roaring Brook Press, 2012.
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