MMunhwasaMunhwasade Na, Chong-il.MateriasCivilizationHistoryEdiciones (1)Munhwasa (1982)Sŏul Taehakkyo Chʻulpʻanbu · korMás obras de Na, Chong-il.HHyŏndae sŏgu chŏngchʻironHyŏndae sŏgu chŏngchʻironKKkŭnnaji anŭn chŏnjaengKkŭnnaji anŭn chŏnjaengKKkunnaji anun chonjaengKkunnaji anun chonjaeng