Ãâó : http://www.chongshin.ac.kr/mbs/csu/download/01_intro/03/%EC%A0%9C6%ED%8E%B8%20%ED%95%99%EC%83%9D/2.%20%EB%8C%80%ED%95%99%EC%9B%90/%EC%8B%A0%ED%95%99%EB%8C%80%ED%95%99%EC%9B%90%20%EA%B2%BD%EA%B1%B4%ED%9B%88%EB%A0%A8%20%EB%B0%8F%20%EA%B2%BD%EA%B1%B4%ED%9B%88%EB%A0%A8%EC%9B%90%20%EC%9A%B4%EC%98%81%EA%B7%9C%EC%A0%95.pdf