Childfree: Stepping Up Women's Freedom of Choice Against a Falling Economy

Joshi, H. (1990). The Cash Opportunity Cost of Child bearing: An approach to estimation using british data. Population Studies,1, 41--60.

Kyodo. 2019. Elderly citizens accounted for record 28.4% of Japan's population in 2018, data show. The Japan Times 15 Sept 2019. https://www.japantimes.co.jp/news/2019/09/15/national/elderly-citizens-accounted-record-28-4-japans-population-2018-data-show/ 

McDonald, Peter. 2008. Very Low Fertility Consequences, Causes, and Policy Approach.The Japanese Journal of Population, Vol,6. No.1 

Miettinen, A., Rotkirch, A., Szalma, I., Donno, A., and Tanturri, M. L. (2015). Increasing childlessness in Europe: Time trends and country differences. Stockholm: Stockholm University (FamiliesAndSocieties Working Paper 33).

Nagarajan K.V. 1980. Testing for a possible non-linear relationship between income and fertility implied in the theory of demographic transition: the U.S. case, 1909-1957. Genus. no. 36(3/4):159-69.   

Population Institute East-West Center. 1989. Costs and Benefits of Children: Implications for Population Policy. Asia-Pacific Population & Policy No.8.  

Tanturri, M. L., & Mencarini, L. (2008). Childless or childfree? Paths to voluntary childlessness in Italy. Population and Development Review, 34(1), 51--77.

The World Bank. Development Indicators. The World Bank, Databank, World Development Indicators