archive
원문 _ https://www.youtube.com/watch?v=SJNpJfPOuA4
원문 _ https://brunch.co.kr/@choikyunghe/38?fbclid=IwAR1sfwltywRJ-SJ97sRtD-pz3ypT1gQNHWv1pNhQC8VlAY2ym379bvoULto
원문 _ https://terms.naver.com/entry.nhn?docId=3566849&cid=59120&categoryId=59120
원문 _ https://www.youtube.com/watch?v=valMmlOsXHA
원문 _ https://www.youtube.com/watch?v=NbSLyd5g2gE