• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130866
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130867
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130868
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130826
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130827
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130828
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130829
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130830
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130831
• https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/130832