Tremayne, P. (2015). The devil's seal: A mystery of ancient Ireland (First U.S. edition.). Minotaur Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTremayne, Peter. The Devil's Seal: A Mystery of Ancient Ireland. First U.S. edition. New York: Minotaur Books, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTremayne, Peter. The Devil's Seal: A Mystery of Ancient Ireland. First U.S. edition. Minotaur Books, 2015.
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