In-jong Yu

• "Sŏul kyoyuk sae mulkyŏl undong" ŭl tʻonghan Sŏul kyoyuk ŭi pyŏnhwa wa palchŏn
• Hanʼguk kyoyuk ŭi chŏntʻong kwa kaehyŏk
• Hanʼguk kyoyuk ŭi rimodelling
• Segye kyoyuk ŭi kaehyŏk tonghyang