Clark, T. Michael, author
Sams, 1999
Buku Teks
Lefebvre, Jason, author
Sams Publishing, 2002
Buku Teks
Moncur, Michael, author
Sams, 2002
Buku Teks
López, Daniel (Daniel López Ridruejo), author
SAMS Publishing, 2002
Buku Teks
Bruce, Betsy, author
SAMS Publishing, 2003
Buku Teks