Keene, C. (2017). The professor and the puzzle (First Aladdin hardcover edition.). Aladdin Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeene, Carolyn. The Professor and the Puzzle. First Aladdin hardcover edition. New York: Aladdin Books, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKeene, Carolyn. The Professor and the Puzzle. First Aladdin hardcover edition. Aladdin Books, 2017.
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