Kim, Chol Ho, author
Gugo dongnib manse.3 : gugo osil lyogi pab mogyochunda
Utopia, 2008
 Buku Teks
Kim, Hye Suk, author
(Modorigatonanen) gugo hakkwa gugo gyohaeng : haeng sol
Wolin, 2009
 Buku Teks
Choi, Song Wu, author
Gugo-ui gosu.1-3
Communication Books, 2007
 Buku Referensi
Nam, Yong Sin, 1948-, author
4 Junganui gugo yohaeng : gugo yohaeng el machi myon gelssegika
Seongandang, 2010
 Buku Teks
Gugo Nophimbep phyohyon ui paldal 2
by Hong Jong Son ... [and others]
Doseo Chulphcn;Doseo Chulphcn, 2009
 Buku Teks
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