Kvern, Martin Olav
Macromedia Press, 1998
Buku Teks SO
Prima Infosarana Media, Kelompok Kompas Gramedia, 2010
Multimedia
Cho, Chin-Kuei
John Wiley , 1987
Buku Teks SO
O`Regan, Gerard
Springer, 2014
Buku Teks SO
Laseau, Paul
Erlagga, 2004
Buku Teks SO