Choe, Chun-sik, author
Sonamu, 2009
Buku Teks
Cho Chae-yun
Pagijong, 2009
Buku Teks
Yun, Yong-man, author
Pagijong Press, 2005
Buku Teks
Cho, Myong-jin, author
Han?guk Kyongje Sinmun, 2011
Buku Teks
Sol, Bong-sik, author
Jungang daehakkya Choolphaboo,, 2007
Buku Teks