Howard, Keith, author
ASHAGE, 2006
Buku Teks
editor Kim Ki-Su and Lee Kyung-Mo
Ministry of Culture and Information, 1970
Buku Teks
Howard, Keith, author
ASHAGE, 2006
Buku Teks
Lee, Yong Shik, 1966-, author
Jimoondang International, 2004
Buku Teks
Song, Bang-song, author
Jimoondang, 2000
Buku Teks