K. Warner Schaie, Sherry L. Willis, editor ; Bob G. Knight, Becca Levy, Denise C. Park, associate editors
Elsevier, 2011
Buku Teks
Cook, Alicia Skinner, author
Macmillan, 1983
Buku Teks
Annies Sekar Firdausi, author
Fakultas Psikologi Universitas Indonesia, 2017
UI - Skripsi (Membership)
editor, James E. Birren and K. Warner Schaie
Academic Press, 1990
Buku Referensi
Lazarus, Richard S., author
Oxford University Press, 2006
Buku Teks