Jee Youn Kim, Hyun Sim Doh, Min Jung Kim, Korean Association of Child Studies, Korean Journal of Child Studies 29 (5), 2008, 133 - 150 (dbpia.co.kr)
Eun Joo Moon, Hae Youn Choi, The Korean Psychological Association, THE KOREAN JOURNAL OF HEALTH PSYCHOLOGY 20 (1), 2015, 1 - 16 (dbpia.co.kr)
About Youtuber America's Holistic Plastic Surgeon, Dr. Anthony Youn is a board - certified plastic surgeon practicing in Metro Detroit. (blog.feedspot.com)