Finkelstein, Ellen, author
IDG Books, 2000
Buku Referensi
Earle, James H., author
Addison-Wesley, 1994
Buku Teks
Suparno Sastra M., author
Elex Media Komputindo, 2009
Buku Teks
Bethune, James D., author
Pearson-Prentice Hall, 2006
Buku Teks
Kyles, Shannon R., author
Blackwell Publishing, 2008
Buku Teks