Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 1999
Buku Teks
Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 2000
Buku Teks
Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 1997
Buku Teks
Hong, Yun-hwe, author
Daekyobook, 2006
Buku Teks
Son, Chun-ik, author
(Ju) Chang Jak gwa Bipyeong sa, 1990
Buku Teks