Ŭn-gyŏng Pak

1959

• Chosŏn chŏnʼgi purhwa yŏnʼgu
• Ilche ha Chosŏnin kwallyo yŏnʾgu
• Pŏmŏsa ŭi Pulgyo misul
• Sŏ Ilbon chiyŏk Hanʼguk ŭi pulsang kwa purhwa