Cassel, Paul, author
SAMS Pub., 1998
Buku Teks
Lee, Lisa M., author
Que, 1999
Buku Referensi
Boswell, William, author
New Riders, 2000
Buku Teks
Simmons, Curt, 1968-, author
McGraw-Hill, 2003
Buku Teks
Seguis, Steve, author
McGraw-Hill, 2008
Buku Teks