1. PISA 2018 Insight and Interpretations,2018
2. TIMSS 2015 International Results,2015
3. Population with tertiary educationhttps://www.oecd-ilibrary.org/education/population-with-tertiary-education/indicator/english_0b8f90e9-en
4. National Information Society Agency. Based on the Evaluation Results of Major Overseas Organizations Such as the OECD Current Status and Implications of Korea’s ICT Infrastructure. AI Network Insight. 2,2019
5. Korea’s Top 10 Trading Goodshttp://stat.kita.net/stat/world/major/KoreaStats12.screen