Im, Chi-ryong, author
Kugo uimiron
Tap Chulpansa, 1992
 Buku Teks
Yun, Pyong-hyon, 1950-, author
Kugo uimiron
Yongnak, 2008
 Buku Teks
Nam, Ji-Sun, author
Hangugo tongsa, hyongyongsa hwaryong mabopsa
Pakijung, 2009
 Buku Teks
Kim, Jin-sik (김진식), 1956-, author
Hyondae kugo ui miron yon-gu
Park Lee Jong, 2007
 Buku Teks
Pak, Dong-gun, 1966-, author
Hangugo hyong thaeron yongu ui saeroun monsaek
Sontong, 2008
 Buku Teks