[publisher not identified], [date of publication not identified]
Buku Klasik
Abdurrahman, author
1986
UI - Tesis (Membership)
Tobing, Henriko, author
Universitas Indonesia, 2012
UI - Tesis (Open)
Artikel Jurnal
Mirwanto Manuwiyoto, author
Pustaka Sinar Harapan, 2005
Buku Teks