Kang Kyong-suk, Chin Hong-sop
Trukbyeolsi sinmunro, iljisa, 2008
Buku Teks
Chang, Yong Jun, 1962-, author
Salim, 2006
Buku Teks
Kim, Gu, 1876-1949, auhtor
Nanam, 2005
Buku Teks
Dinsdale, W.A.
Sir Isaac Pitman & Sons, Ltd. , 1959
Buku Teks
Gang, So-chon, author
Mun Hak Dong Nea, 2003
Buku Teks