Yun, Pyong Hyon, 1950-
Kugo uimiron
Yongnak, 2008
Buku Teks
Song, Chang-son
Kugo t`ngsaron
Han`guk Munhwasa, 2010
Buku Teks
Ko, Yong-gun
Pyojun jungse kugo munbomnon
Jipmoondang, 2010
Buku Teks
Do, Wan Yong
Kugo hyong yongsong tongsa yongu
T'achaksa, 2008
Buku Teks
Im, Ji Ryong
Kugo ui miron = language semantics
Thamchulphansa, 2010
Buku Referensi