Hwang, Pae-gang, author
Jain, 2006
Buku Teks
Haeoe Hongbowon, author
Korean Culture and Information Service, 2011
Buku Teks
Yim, Seock Jae, author
Ewha Womans University Press, 2005
Buku Teks
New Jersey Hollym International Corp 2005
Buku Teks
Crane, Paul S., author
Seoul Press, 1999
Buku Teks