Ryu, Je-hun, author
Hollym, 2000
Buku Teks
edited by Francesco Vallerani and Francesco Visentin
Routledge, 2018
Buku Teks
The National Institute of the Korean Language & The International Korean Language Foundation, 2008
Buku Teks
Hollym, 2007
Buku Teks
Korean Overseas Information Service
Hollym, 2003
Buku Teks