Chŏng-yŏp Chi

• Chŏn Il-chʻi chŏn
• Chʻŏnnyŏn ŭl toraon sarang
• Ippŭni wa ch'ŏn'gyehwa
• Nan-Ch'o chaese kiyŏnnok
• Nan-Chʻo chaese kiyŏnnok
• Nanchʻo chaesegi yŏllok
• 조선어문법사