Pijunsu hangugo = 비즈니스 한국어 = Business Korean
Yonse Taehakkyo Hangugo Haktang pyon
Yonsei University Press, 2009
Buku Teks
Ko, Yong-gun
Pyojun jungse kugo munbomnon
Jipmoondang, 2010
Buku Teks
Kim, Sel-ong
28-cha ro irun muncha hyongmyong : hunmin chongu
Aiseum, 2007
Buku Teks
Kang, Sang-gyu
Ch'onjamun, ku ppuri wa Tongyanghakchok sayu = Thousand Character Classic, its roots and Eastern archaeological grounds
Omunhaksa, 2010
Buku Teks
Kang, Hyon-hwa
Korean picture dictionary
Darakwon, 2009
Buku Referensi