Sidabutar, Mangasa, author
RajaGrafindo Persada, 1999
Buku Teks
Universitas Indonesia, 2007
UI - Skripsi (Membership)
Kaligis, O.C. (Otto Cornelis), 1942-, author
Alumni, 2006, 2013
Buku Teks
Salviadona Tri P., author
Universitas Indonesia, 2005
UI - Tesis (Membership)
Fajar Herbudi Arifianto, author
Universitas Indonesia, 2008
UI - Skripsi (Membership)