Shackelford, James F.
Prentice-Hall International, 1996
Buku Teks SO
Shackelford, James F.
Pearson-Prentice Hall, 2005
Buku Teks SO
Meier, Michael L.
2005
Multimedia
Meier, Michael L.
Pearson Education, 2005
Multimedia
Van Vlack, Lawrence H.
Addison-Wesley, 1970
Buku Teks SO