Pyŏng-ik Ko
1924
Chosan kwansujip- Chʻŏngmal kaehyŏkpʻa ojong kigan mokchʻa chongchʻan
- Hyechʻo ŭi kil ttara
- Ilbon ŭi hyŏndaehwa wa Han-Il kwanʾgye
- Kankoku jōkoshi no sōten
- Segye munhwasa
- Sŏnbi wa chisigin
- Tong Asia munhwasa nonʾgo
- Tong Asia ŭi chŏntʻong kwa kŭndaesa
- Tong Asia ŭi chŏntʻong kwa pyŏnyong
- Tonga kyosŏpsa ŭi yŏnʾgu
- Wang o Chʻŏnchʻukkuk chŏn haeje