edited by Brett V. Brown
Lawrence Erlbaum Associates, 2008
Buku Teks SO
Bradley, Ben
Wiley, 2015
Buku Teks
Oxenford, Rosalind
Annest publishing, 2000
Buku Teks
edited by Dave Webb and Eduardo Wills-Herrera
Springer, 2012
eBooks
editors Daniel Kahneman, Ed Diener, and Norbet Schwarz
Russel Sage Foumdation, 1999
Buku Teks