Kim, Hye Suk
(Modorigatonanen) gugo hakkwa gugo gyohaeng : haeng sol
Wolin, 2009
Buku Teks
No, Dae Gyu
Gugo hak seaseol
Sinwonmunhwasa, 2008
Buku Teks
Bae, Chang-hwan
Gugo sigane siilki.1
Vernacular, 2010
Buku Teks
Choi, Song Wu
Gugo-ui gosu.1-3
Communication Books, 2007
Buku Referensi
Kim, Chol Ho
Gugo dongnib manse.3 : gugo osil lyogi pab mogyochunda
Utopia, 2008
Buku Teks