Rensius Manulae, author
Universitas Indonesia, 1989
UI - Skripsi (Membership)
Antonio P. Hardojo, author
Universitas Indonesia, 1989
UI - Skripsi (Membership)
2004
Artikel Jurnal
Universitas Indonesia, 1994
UI - Skripsi (Membership)
Sabrina, author
Universitas Indonesia, 1991
UI - Skripsi (Membership)