Universitas Indonesia, 2008
UI - Skripsi (Open)
Universitas Indonesia, 2014
UI - Skripsi (Membership)
Ricky Bangun, author
Universitas Indonesia, 2012
UI - Tesis (Open)
Universitas Indonesia, 2004
UI - Skripsi (Membership)
Panggabean, R.M., author
2003
UI - Disertasi (Membership)