Fitriyani, author
2007
UI - Tesis (Membership)
Yusep Antonius, author
2007
UI - Tesis (Membership)
Universitas Indonesia, 1985
UI - Skripsi (Membership)
Panjaitan, Petrus Irwan, 1958-, author
Pustaka Sinar Harapan, 1995
Buku Teks
Universitas Indonesia, 1992
UI - Skripsi (Membership)