Leibrock, Cynthia A.
Wiley, 2000.
Buku Teks
Leibrock, Cynthia A., author
John Wiley & Sons, 2000
Buku Referensi
Casamassima, Christy
PBC International, 1998
Buku Teks
Encarna Castillo, editor
Harper Design International, 2003
Buku Referensi
Wilhide, Elizabeth, author
Conran Octopus, 1998
Buku Referensi