1. ·······(2019). . .
2. (2024). . https://kess.kedi.re.kr/mobile/stats/school?menuCd=0101&cd=4113&survSeq=2019&itemCode=01&menuId=m_010109&uppCd1=010109&uppCd2=010109&flag=A
3. (2008).. : , 14(1), 299-317.
4. ····(2004).. .
5. (2014).. , 27(1), 85-100.