Ãâó : http://www.chongshin.ac.kr/mbs/csu/download/01_intro/03/%EC%A0%9C3%ED%8E%B8%20%EC%9D%BC%EB%B0%98%ED%96%89%EC%A0%95/2.%20%EC%9D%B8%EC%82%AC%EB%B3%B5%EB%AC%B4%EA%B7%9C%EC%A0%95/%EC%8B%A0%EB%8C%80%EC%9B%90%20%EA%B2%BD%EA%B1%B4%ED%9B%88%EB%A0%A8%EC%9B%90%20%EC%9B%90%EB%AA%A9%EC%97%90%20%EA%B4%80%ED%95%9C%20%EA%B7%9C%EC%A0%95.pdf