K. Warner Schaie, Sherry L. Willis, editor ; Bob G. Knight, Becca Levy, Denise C. Park, associate editors
Elsevier, 2011
Buku Teks
editor, James E. Birren and K. Warner Schaie
Academic Press, 1990
Buku Referensi
Lazarus, Richard S., author
Oxford University Press, 2006
Buku Teks
Schultz, Richard, author
Prentice-Hall, 1999
Buku Teks
Cavanaugh, John C., author
Cengage Learning, cop, 2015
Buku Teks