edited by Peter J. Burke
Stanford University Press, 2006
Buku Teks
International Association of Gerontology; edited by Clark Tibbitts and Wilma Donahue
Columbia University Press, 1962
Buku Teks SO
Deutsch, Morton
Yale University Press, 1985
Buku Teks
edited by Gregory J. Boyle, Donald H. Saklofske, Gerald Matthews
Academic Press, 2015
eBooks
edited by John P. Robinson, Phillip R. Shaver, Lawrence S. Wrightsman
Academic Press, 1991
Buku Teks SO