Beazley, Mitchell
Reed Consumer Books, 1990
Buku Referensi
Wilhide, Elizabeth
Conran Octopus, 1998
Buku Referensi
Encarna Castillo, editor
Harper Design International, 2003
Buku Referensi
Casamassima, Christy
PBC International, 1998
Buku Teks
Taylor, Julie D.
Rockport Publishers, 2002
Buku Teks