Pak, Un-bong, 1960-
Hanguksa dwit iyagi = History behind-the-scenes
Silcheon, 2003
Buku Teks
Kim, Mun-su, 1939-
Uri sorhwa : yasawa yadam euro ttonanen hwangmi sinsinhan yogsa yohwang = Our story : Yasawa exciting journey into history yadam
Doduls, 2010
Buku Teks
Petroski, Henry
The Evalution of useful things
Vintage Books , 1994
Buku Teks SO
Kang, Ju-sik
Uri ga mollaton san guk sidae supai
A rem da un chaek, 2004
Buku Teks
Glsongi
Penemuan gila di dunia = Quiz! Sciences common sense vol.4: invention & discovery
Elex Media Komputindo, 2013
Buku Teks