Andrew Herman, Thomas Swiss, editor
Routledge, 2000
Buku Teks
December, John, author
Sams, 1994
Buku Teks
Rodrigues, Dawn, author
Prentice-Hall, 2000
Buku Teks
Stout, Rick, author
McGraw-Hill, 1996
Buku Referensi
Bride, Mac
Mac Design, 1998
Buku Teks