Kenney, Richard A.
Year Book Medical, 1982
Buku Teks
editor, James E. Birren and K. Warner Schaie
Academic Press, 1990
Buku Referensi
by Yoichi Okazaki [and others]
Foreign Press Center, 1990
Buku Teks
Edward J. Masoro, Steven N. Austad
Elsevier , 2011
Buku Teks
Robert H. Binstock, Linda K. George, editor
Elsevier , 2011
Buku Teks