Cuito, Aurora
Hongkong : Page One Publishing, 2002,
Buku Referensi
Ypma, Herbert
Thames & Hudson, 2000
Buku Referensi
Rockport Publishers, 1998
Buku Teks SO
Ypma, Herbert
Thames & Hudson, 1999
Buku Referensi
edited by Jeong Ji-seong
CAPress, 2008
Buku Referensi