Palmer, A. (1974). Age of optimism (Revised and expanded edition.). Newsweek Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPalmer, Alan. Age of Optimism. Revised and expanded edition. New York: Newsweek Books, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPalmer, Alan. Age of Optimism. Revised and expanded edition. Newsweek Books, 1974.
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