Yoo, Yeol-su
Yekyong Publishing Co., 2002
Buku Referensi
Edited by Angela Gair
Chronicle Books, 1996
Buku Referensi
edited by Rolf Toman; photos by Achim Bednorz
H.F. Ullmann, 2010
Buku Referensi
Kang, Woobang, author
Art Media Resources, 2005
Buku Teks
Saunders, E. Dale, author
Princeton University Press, 1960
Buku Teks