Kim, Jong-rok, author
Park Lee Jeong, 2005
Buku Teks
Language Plus, 2010
Buku Referensi
So, Sang-gyu, author
Sinwon Puraim, 2006
Buku Referensi
Yi, Son-i, 1967-, author
Hangugmunhwasa, 2011
Buku Teks
Lee, Son-i, 1967-, author
Hanguk moon hwasa, 2007
Buku Referensi