Martindale, C. C. (1955). The castle and the ring. Kenedy.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMartindale, C. C. The Castle and the Ring. New York: Kenedy, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMartindale, C. C. The Castle and the Ring. Kenedy, 1955.
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