Krueger, W. K. (2009). Heaven's keep: A Cork O'Connor mystery (1st Atria Books hardcover ed.). Atria Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKrueger, William Kent. Heaven's Keep: A Cork O'Connor Mystery. 1st Atria Books hardcover ed. New York: Atria Books, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKrueger, William Kent. Heaven's Keep: A Cork O'Connor Mystery. 1st Atria Books hardcover ed. Atria Books, 2009.
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