Hagen, G. (2016). Gabriel Finley & the raven's riddle (First Yearling edition.). Yearling.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHagen, George. Gabriel Finley & the Raven's Riddle. First Yearling edition. New York: Yearling, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHagen, George. Gabriel Finley & the Raven's Riddle. First Yearling edition. Yearling, 2016.
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