McDonald, Robert L., author
Addison-Wesley, 2006
Buku Teks
McDonald, Robert L., author
Pearson Education, 2006
Multimedia
London: Tiger Books International, 1994,
Buku Referensi
Chance, Don M., author
Thomson, 2008
Buku Teks
Hull, John C., author
Prentice-Hall, 1997
Buku Teks