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Oltmanns, Thomas F., author
Pearson, 2015
Buku Teks
Nolen-Hoeksema, Susan, author
McGraw-Hill, 2007
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Barlow, David H., author
Connecticut Cengage Learning, 2015
Buku Teks
Nolen-Hoeksema, Susan, author
MCGraw-Hill , 2007
Multimedia