Pak, Dong-gun, 1966-
Hangugo hyong thaeron yongu ui saeroun monsaek
Sontong, 2008
 Buku Teks
Lee, Mi-Hye
Hangugo nunbop hangmok kyoyuk yongu: A study of teaching Korean grammar entries
Pakijung, 2005
 Buku Teks
Chon, Ho-tae, 1959-
Koguryo kobun pyokhwa yongu
Sagyejol, 2000
 Buku Teks
An, Hwi-jun
Hanguk hoehwasa yongu
Sigongsa , 2000
 Buku Teks
Kim, Hyong Chol, 1950-
Guko ohwi yongu
Daehakyo Chulphanbu, 2009
 Buku Referensi