Tŭk-chʻun Yi

• Chosŏnŏ hancha ŏŭm yŏnʾgu
• Chosŏnŏ ŏhwisa
• Han-Cho ŏnŏ muncha kwanʾgyesa
• Kwangbok hu chosŏnŏ nonjŏ mongnok chichʻimsŏ