Kim, Tae Gon
Gugo ohwi ui thongsijok yongu
Bogjong, 2008
 Buku Teks
Choi, Song Wu
Gugo-ui gosu.1-3
Communication Books, 2007
 Buku Referensi
Gugo Nophimbep phyohyon ui paldal 2
by Hong Jong Son ... [and others]
Doseo Chulphcn;Doseo Chulphcn, 2009
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Pak, Dong-gun, 1966-
Hangugo hyong thaeron yongu ui saeroun monsaek
Sontong, 2008
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Yom, Si-yol
Thobagimallo yonen hangugo suob ui sasanggw ono : jusigyong neno mul bop sasang ui 100 junyongi nyom mun
Mussachol, 2010
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