Aca Sugandhy, author
Gramedia Pustaka Utama, 1999
Buku Teks
Tampubolon, Sabartua, author
Universitas Indonesia, 2001
Buku Teks
Tampubolon, Sabartua, author
Universitas Indonesia, 2001
UI - Tugas Akhir
Artikel Jurnal
Monintja, Dirk Gustaaf Adolf, author
1995
UI - Tesis (Membership)