Universitas Indonesia, 1993
UI - Skripsi (Membership)
Universitas Indonesia, 1996
UI - Skripsi (Membership)
Sidabutar, Sandra Maureen, author
Universitas Indonesia, 1993
UI - Skripsi (Membership)
Universitas Indonesia, 1994
UI - Skripsi (Membership)
Universitas Indonesia, 1994
UI - Skripsi (Membership)