Kreps, J. M. (1963). Employment, income, and retirement problems of the aged. Duke University Press.
Citace podle Chicago (17th ed.)Kreps, Juanita M. Employment, Income, and Retirement Problems of the Aged. Durham, N.C.: Duke University Press, 1963.
Citace podle MLA (8th ed.)Kreps, Juanita M. Employment, Income, and Retirement Problems of the Aged. Duke University Press, 1963.
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