The institute for research and community services, ITB, 2007
Majalah, Jurnal, Buletin
The Institute for Research and Community Service ITB,
Majalah, Jurnal, Buletin
Artikel Jurnal
Turban, Efraim, 1930-, author
John Wiley & Sons, 2003
Buku Teks
Dennis P. Curtin, [et al] author
McGraw-Hill Book, 1998
Buku Teks SO