ebrary, Inc, National Bureau of Economic Research Conference on the Economics of Aging, & Wise, D. A. (1990). Issues in the economics of aging. University of Chicago Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc, National Bureau of Economic Research Conference on the Economics of Aging, और David A. Wise. Issues in the Economics of Aging. Chicago: University of Chicago Press, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc, et al. Issues in the Economics of Aging. University of Chicago Press, 1990.
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