National Bureau of Economic Research, ebrary, Inc, & Wise, D. A. (1989). The economics of aging. University of Chicago Press.
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Dyfyniad Arddull Chicago
National Bureau of Economic Research, Inc ebrary, and David A. Wise. The Economics of Aging. Chicago: University of Chicago Press, 1989.
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Dyfyniad MLA
National Bureau of Economic Research, et al. The Economics of Aging. University of Chicago Press, 1989.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.