Appelt, K., & Hall, A. (2012). Keeper (First Atheneum Books for Young Readers paperback edition.). Atheneum Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAppelt, Kathi, और August Hall. Keeper. First Atheneum Books for Young Readers paperback edition. New York: Atheneum Books for Young Readers, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAppelt, Kathi, और August Hall. Keeper. First Atheneum Books for Young Readers paperback edition. Atheneum Books for Young Readers, 2012.
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