Rieppel. Turtles as Hopeful Monsters. Indiana University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRieppel. Turtles as Hopeful Monsters. Indiana University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRieppel. Turtles as Hopeful Monsters. Indiana University Press.
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