Bardbury, Mary
Routledge, 1999
Buku Teks
International Association of Gerontology; edited by Clark Tibbitts and Wilma Donahue
Columbia University Press, 1962
Buku Teks
edited by Peter J. Burke
Stanford University Press, 2006
Buku Teks
edited by G. P. Ginsburg.
Wiley, 1979
Buku Teks
edited by Gregory J. Boyle, Donald H. Saklofske, Gerald Matthews
Academic Press, 2015
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