Gaultney, Jane F., author
California, 2007
Buku Teks
BPS Blackwell, 2004
Buku Teks
Dunn, Dana S., author
Wiley-Blackwell, 2009
Buku Teks
Coolican, Hugh, author
Psychology Press, 2014
Buku Teks
Michael Eid; Ed Diener
american Psychological Association, 2006
Buku Teks