Kiernan, C. (2014). Into the Grey (First U.S. edition.). Candlewick Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKiernan, Celine. Into the Grey. First U.S. edition. Somerville, Massachusetts: Candlewick Press, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKiernan, Celine. Into the Grey. First U.S. edition. Candlewick Press, 2014.
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