Mugwa chʻongyo yŏnʾgude Yŏng-il NaMateriasCivil serviceExaminationsArmed ForcesOfficials and employeesHistoryMugwa chʻongyoEdiciones (1)Mugwa chʻongyo yŏnʾgu (2005)Sŏul Taehakkyo Chʻupʻanbu · korMás obras de Yŏng-il NaCChŏngjo sidae ŭi muyeChŏngjo sidae ŭi muye2003MMugwa chʻongyo yŏnʾguMugwa chʻongyo yŏnʾgu2005CChosŏn chunggi muyesŏ yŏnʼguChosŏn chunggi muyesŏ yŏnʼgu