Ha-sun Chʻa

• Burŭkʻŭharŭtʻŭ wa Niichʻe
• Hanʼguksa sidae kubullon
• Hyŏndae ŭi yŏksa sasang
• Saeroun yŏksagwan
• Sŏyang kŭndae sasangsa yŏnʼgu
• Sŏyang sahak ŭi suyong kwa palchŏn
• Yŏksa ŭi ponjil kwa insik
• Yŏksa wa munhak