Choi, Song Wu
Communication Books, 2007
Buku Referensi
Kim, Tae Gon
Bogjong, 2008
Buku Teks
by Hong Jong Son ... [and others]
Doseo Chulphcn;Doseo Chulphcn, 2009
Buku Teks
Hong Jong-son, Kim Ji-oh, Ha Jung-su, Gim Hyery-yong (change)
Do seo Chulphan, 2009
Buku Teks
by Choe Chon Sung ... [and others]
Paju-si : Taehaksa, 2008
Buku Teks