Chŏng-il Yi

• Chongmallon ŭi hŏ wa sil
• Koryŏ ŭi kukka ŭisik kwa Tong Asia
• Kugyŏk 'Sadae mun'gwe'
• Kyoyang ŭrosŏŭi ch'ŏrhak
• Sihak sajŏn
• Tamunhwa sahoe wa t'aja ihae