edited by Fergus L.M. Craik, Timothy A. Salthouse
Lawrence Erlbaum, 1992
Buku Teks
edited by Clark Tibbitts and Wilma Donahue
Prentice-Hall, 1960
Buku Teks
International Association of Gerontology; edited by Clark Tibbitts and Wilma Donahue
Columbia University Press, 1962
Buku Teks
Quadagno, Jill S., author
McGraw-Hill, 2002
Buku Teks
Cox, Harold, author
Prentice-Hall, 1984
Buku Teks