Kreps, J. M. (1971). Lifetime allocation of work and income: Essays in the economics of aging. Duke University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKreps, Juanita Morris. Lifetime Allocation of Work and Income: Essays in the Economics of Aging. Durham, N.C: Duke University Press, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKreps, Juanita Morris. Lifetime Allocation of Work and Income: Essays in the Economics of Aging. Duke University Press, 1971.
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