The Language Research Institute of Seoul National University; written by Lee Sang-oak Lee [and others]
Hollym, 1999
Buku Teks
Harris, Richard, author
Hollym , 2005
Buku Teks
Kim, Young-il, author
Pakmunsa, 2009
Buku Referensi
Kim, Chin-ho, 1968-, author
Pagijong, 2006
Buku Teks
An, Kyong-hwa, author
Han'guk Munhwasa, 2007
Buku Teks
Kim, Jong-rok, author
Park Lee Jeong, 2005
Buku Teks