Hyon, Gil-on, author
Chang Jak iwa BT pyeong Sa, 1998
Buku Teks
Hyon, Gil-on, author
Chang Jak iwa BT pyeong Sa, 1999
Buku Teks
Lee, Won-su, author
(Ju) Chang Jak gwa Bi pyeong sa,, 2001
Buku Teks
Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 2000
Buku Teks
Hong, Yun-hwe, author
Daekyobook, 2006
Buku Teks