Leibrock, Cynthia A.
Wiley, 2000.
Buku Teks
Taylor, Julie D.
Rockport Publishers, 2002
Buku Teks
Casamassima, Christy
PBC International, 1998
Buku Teks
Encarna Castillo, editor
Harper Design International, 2003
Buku Referensi
Wilhide, Elizabeth
Conran Octopus, 1998
Buku Referensi