Schmahl, W. (1989). Redefining the process of retirement: An international perspective. Springer-Verlag.
Chicago Style (17. basım) AtıfSchmahl, Winfried. Redefining the Process of Retirement: An International Perspective. Berlin: Springer-Verlag, 1989.
MLA (9th ed.) AtıfSchmahl, Winfried. Redefining the Process of Retirement: An International Perspective. Springer-Verlag, 1989.
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