20 Segi hanguk soseol 13: Hak-cheol Kim et al jiharyeon
Chang bi, 2005
 Buku Teks
20 Segi hanguk sosol 21 : Seopyeonje, byeongsingwa meojeori, gyeolbam, pointeu
Lee Chung Jun, Lee Byung Ju, Choi Sang Gyu, Song Sang Uk
Changbi, 2009
 Buku Teks
20 Segi hanguk sosol 20: gang muneojin geuksang:gang geoneo jocchok-eso
Changbi, 2005
 Buku Teks
Kwang Yong, Jean, author
20 Segi hanguk soseol 17: Jean Kwang Yong, Lee Bom Sun, Lee Ho Chol
Chang bi, 2005
 Buku Teks
Choe, Won-sik, author
20 Segi hanguk soseul 6
Changbi, 2009
 Buku Teks
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