Taehan Min'guk Imsi Chŏngbu ŭi ansallimkkun Chŏng Chŏng-hwaMyŏng-sik Sin · First published 2010Open the Tome
Chŏng Chong-sŏp Kyosu wa hamkke ponŭn Taehan Min'guk HŏnpŏpChong-sŏp Chŏng · First published 2004Open the Tome