- 3장 미국과 한국, 육아를 바라보는 관점의 차이(1)
https://extension.unr.edu/parenting/default.aspx
https://www.washingtonpost.com/lifestyle/2021/02/23/kids-happiness-emotions/
https://www.psychologytoday.com/us/blog/growing-friendships/201712/when-and-how-say-no-kids