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Buku Teks
Patria Priharmoko, author
Fakultas Psikologi Universitas Indonesia, 2000
UI - Skripsi (Membership)
DiFonzo, Nicholas, author
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Buku Teks
Currier, Glenn
Harcourt, college Pub., 1997
Buku Teks
Ritzer, George, author
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Buku Teks