Jo, Hyon-yong
Howe, 2009
Buku Teks
Kungnip Kugowon
Komyunikeisyon Buksu, 2005
Buku Referensi
[by] Gu Bon-wan ... [and others]
Korea Language PLUS, 2009
Buku Referensi
Komyunikeisyon Buksu, 2006
Buku Teks
Im, Kyong-sun, 1965-
Hanguk Oegugo Taehakkyo Chanbu, 2009
Buku Teks