Lee, Jae Sung., author
Gelssegirelwihan 4 chonmane gugochek
Delnyok, 2009
 Buku Teks
Hangel baregae algo sseja machumbob pyon = the correct labeling Hangul Refurbished: Spelling side
Taeyoung M & B, 2006
 Buku Referensi
Han, Su-yong, author
Gelssegi-ui jido = roadmap to better writing
Jisieul Nalge, 2010
 Buku Teks
Lee, Byong-gab, author
Urimal munjang baro ssegi note : hanguk omunsang jedaero ssedo pa rekekogi
Minemsa, 2009
 Buku Teks
Park, Jong Deok
Gukeo gyoyokeul wihan T'honghab gukeo nansul gyoyukhak
Hankookmunhwasa, 2008
 Buku Teks
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