Wolf, Eric R.
Peasants
Prentice-Hall, 1966
 Buku Teks SO
Wolf, Eric R.
Peasants
Prentice-Hall, 1966
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Nevid, Jeffrey S.
Abnormal psychology in a changing world
Prentice-Hall, 1997
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Nevid, Jeffrey S.
Abnormal psychology in a changing world
Pearson-Prentice Hall, 2006
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Nevid, Jeffrey S.
Abnormal psychology in a changing world
Pearson Education International, 2008
 Buku Teks SO