Smith, Gary
Allyn and Bacon, 1985
Buku Teks SO
Bennett, Jeffrey O.
Pearson - Addison Wesley, 2009
Buku Teks SO
Bennett, Jeffrey O.
Pearson - Addison Wesley, 2009
Multimedia
McCarthy, Philip J.
McGraw-Hill, 1957
Buku Teks SO
Krug, Ronald S.
Springer-Verlag, 1992
Buku Teks