Geyl, Pieter, 1887-1966, author
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Buku Teks
Universitas Indonesia, 2003
UI - Skripsi (Membership)
Winda Hapsari, author
Fakultas Psikologi Universitas Indonesia, 2006
UI - Tesis (Membership)
Widodo Kushartomo, author
1998
UI - Tesis (Membership)
Artikel Jurnal