Chong-o Yi

• 1950-yŏndae Hanʼguk sahoe wa 4.19 Hyŏngmyŏng
• Hanguk ui kaehyok kwa minjujuui
• Hanʾguk ŭi kaehyŏk kwa minjujuŭi
• Ŏttŏn pokchi kukka in'ga?