WARREN, R. P. Six Centuries of Great Poetry. Dell Publishing Co., Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWARREN, Robert Penn. Six Centuries of Great Poetry. Dell Publishing Co., Inc.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWARREN, Robert Penn. Six Centuries of Great Poetry. Dell Publishing Co., Inc.
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