Davison, Gerald C., author
John Wiley & Sons, 2004
Buku Teks
Alison Alexander, Jarice Hanson, editor
McGraw-Hill/Dushkin, 2001
Buku Teks
Rourke, John T., author
The Dushkin, 1991
Buku Teks
Oltmanns, Thomas F., author
Pearson, 2015
Buku Teks
Nolen-Hoeksema, Susan, author
McGraw-Hill, 2007
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