Avi. (2004). Crispin: The cross of lead (1st Hyperion Paperback ed.). Hyperion Paperbacks for Children.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAvi. Crispin: The Cross of Lead. 1st Hyperion Paperback ed. New York: Hyperion Paperbacks for Children, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAvi. Crispin: The Cross of Lead. 1st Hyperion Paperback ed. Hyperion Paperbacks for Children, 2004.
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