Kyu-il Yi

• Hanguk misul ui myongam (Hwadan yasa)
• Hanʾguk misul cholbogi
• Iyagi hanŭn kŭrim
• Sunʼgyoja Chŏng Il-sŏn Moksa ŭi saengae
• Twijibo pon Hanguk misul (Hwadan yasa)