Ko, Un, author
Youngkyo Publishing Co., Ltd, 2011
Buku Teks
Kim, Yong Taek, author
Silcheon Moon Hak, 2005
Buku Teks
Mok, Il-sin, author
Mun Hak Dong Nea, 2003
Buku Teks
Gweon, O-sun, author
Mun Hak Dong Nea, 2003
Buku Teks
Jon, Dae-ho, author
Mimeumsa, 2007
Buku Teks