Pyŏng-chʻae Pak

• Kodae kugŏ ŭi ŭmun pigyo yŏnʼgu
• Kodae kugŏ ŭi yŏnʼgu
• Kodae kugŏ ŭi yŏnʾgu
• Kodae kugŏhak yŏnʼgu
• Koryŏ kayo ŏsŏk yŏnʼgu
• Koryŏ kayo ŭi ŏsŏk yŏnʼgu
• Kugŏ paltalsa
• Nonju Wŏrin chʻŏnʼgang chi kok
• Sasŭm i chimtae ye orasyŏ