The McGraw-Hill Companies, {s.a}
Majalah, Jurnal, Buletin
EMAP, Royal Mail International c/o Smartmail, {s.a}
Majalah, Jurnal, Buletin
Donhead,
Majalah, Jurnal, Buletin
Lawson, Bryan
Jalasutra, 2007
Buku Teks
Yandi Andri Yatmo
Fakultas Teknik Universitas Indonesia, 2007
UI - Laporan Penelitian