Artikel Jurnal
Misra Dewita, author
Universitas Indonesia, 2011
UI - Tesis (Open)
Angela Lorina Mathaus, author
Universitas Indonesia, 1999
UI - Skripsi (Membership)
penyunting, Rikard Bangun dan Servas Pandur
Institut Ecata-INPI-Pact, 1997
Buku Teks
Pasaribu, Puspa, author
Universitas Indonesia, 2009
UI - Skripsi (Open)