1. Statistics Korea. Preliminary results of birth and death statistics in 2020. Updated 2021. Accessed November 20, 2021. http://kostat.go.kr/portal/korea/kor_nw/1/1/index.board?bmode=read&aSeq=388265
2. Korean Statistical Information Service. Population, birth statistics. Updated 2021. Accessed November 20, 2021. https://kosis.kr/index/index.do
3. Organisation for Economic Co-operation and Development. Fertility rates. Updated 2020. Accessed November 20, 2021. https://data.oecd.org/pop/fertility-rates.htm
4. Presidential Committee on Aging Society and Population Policy (KR). The 1st plan for low birth rate and aging society in Korea (2006–2010). Updated 2018. Accessed July 25, 2021. https://www.betterfuture.go.kr/front/policySpace/basicPlanDetail.do;jsessionid=50834218BBCA6D108693F71F18E941BF.node20?articleId=1
5. Presidential Committee on Aging Society and Population Policy (KR). The 2nd plan for low birth rate and aging society in Korea (2011–2015). Updated 2018. Accessed July 25, 2021. http://www.betterfuture.go.kr/front/policySpace/basicPlanDetail.do;jsessionid=7F428A894D1F2E3556A76E53B63388AE.node20?articleId=2