American Psychology Association, 1996
Buku Teks
Edited by S. Maes, H. Leventhal and M. Johnston
John Wiley & Sons, 1993
Buku Teks
Taylor, Shelley E., author
McGraw-Hill, 2012
Buku Teks
Marks, David F., author
Sage, 2018
Buku Teks
Barker, Chris, author
John Wiley & Sons, 2002
Buku Teks