The Indonesian Update
Jakarta: The Indonesian Institute,
Majalah, Jurnal, Buletin
UI update
Kantor komunikasi UI,
Majalah, Jurnal, Buletin
On the signature of the symmetric union and the skew -symmetric union of link
Artikel Jurnal
Katzenbach, Jon R.
Hart`s war
Ballantine Books, 2002
Buku Teks
Anbeek, Ton
Donkere hart
Amsterdam University press, 1996
Buku Teks