Patria Priharmoko
Fakultas Psikologi Universitas Indonesia, 2000
UI - Skripsi (Membership)
DiFonzo, Nicholas
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Buku Teks
Currier, Glenn
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Buku Teks
Ritzer, George
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Buku Teks
edited by Kenneth Thomson and Jeremy Tunstall
Penguin Books, 1983
Buku Teks