Chang, Tŏk-hwan.

• Chung-So punjaeng ŭi pyŏnchʻŏn kwajŏng e kwanhan punsŏkchŏk yŏnʼgu
• Hyŏndae ŭi chŏngchʻihak
• Soryŏn ŭi oegyo chŏngchʻaek