Sŭng-yŏl O

• Chungguk kyŏngje ŭi kaehyŏk, kaebang kwa kyŏngje kujo
• Pukhan kwa Chungguk ŭi kyŏngje kwanʼgye punsŏk
• Pukhan kyŏngje kaehyŏk ŭi chʻoejŏk panghyang yŏnʼgu
• Pukhan kyŏngje ŭi pyŏnhwa
• Pukhan kyŏngje ŭi pyŏnhwa wa insentʻibŭ kujo
• Pukhan ŭi kyŏngje kaehyŏk kwa Nambuk kyŏnghyŏp
• 華城東鶴山遺蹟