Cuito, Aurora
Hongkong : Page One Publishing, 2002,
Buku Referensi
Page One Publishing, [date of publication not identified]
Buku Referensi
edited by martin Nicholas Kunz
teNeues, 2003
Buku Teks
Dittrich, Guy, editor
teNeues, 2006
Buku Referensi
Crochet, Treena
Prentice-Hall, 1999
Buku Teks