Birren, J. E. (1959). Handbook of aging and the individual: Psychological and biological aspects. Chicago : University of Chicago Press.
Chicago-viite (17. p.)Birren, James E. Handbook of Aging and the Individual: Psychological and Biological Aspects. Chicago : University of Chicago Press, 1959.
MLA-viite (9. p.)Birren, James E. Handbook of Aging and the Individual: Psychological and Biological Aspects. Chicago : University of Chicago Press, 1959.
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