1-4 of 4 Books
Hanʾguk chʻangse sŏsasi yŏnʾgu
By Chong-sŏng Pak
Tto hana ŭi silchae
By Hyŏng-jin Ko
Hanʾguk sŏsasi wa sŏsa siin yŏnʾgu
By Pyŏng-uk Min
Choguk ŭi tʻonggok
By Sang-gu Chŏng