Yusak Novanto, author
2001
UI - Skripsi (Membership)
Margaretha T. Kuera, author
Fakultas Psikologi Universitas Indonesia, 2004
UI - Skripsi (Membership)
Manopo, Christine, author
2002
UI - Skripsi (Membership)
Sukaria, author
1995
UI - Skripsi (Membership)
Fakultas Psikologi Universitas Indonesia, 1993
UI - Skripsi (Membership)