Sheaffer, L. (1968). O'Neill, son and playwright. Little, Brown.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSheaffer, Louis. O'Neill, Son and Playwright. Boston: Little, Brown, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSheaffer, Louis. O'Neill, Son and Playwright. Little, Brown, 1968.
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