Lee, O-dok
Uri Ban Sundoki
Chang Jak iwa BT pyong Sa, 2000
Buku Teks
Hong, Yun-hwe
Kumkunen Yuyu
Daekyobook, 2006
Buku Teks
Lee, O-dok
Isa Gadon Nal
Chang Jak iwa BT pyong Sa, 1999
Buku Teks
Lee, O-dok
Uri Jib Tokki
Chang Jak iwa BT pyong Sa, 1997
Buku Teks
Hong, Gon-guk
(1 hak nyon) gwahak donghwa 1-4 / Hong Gon-guk
Ye Rim Dang, 2002
Buku Teks