Gray. Crossing the Deadlines. The Kent State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGray. Crossing the Deadlines. The Kent State University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGray. Crossing the Deadlines. The Kent State University Press.
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