1. Alpermann, B. and Zhan, S. (2019). Population planning after the one-child policy: Shifting modes of political steering, Journal of Contemporary China, 28(117), 348–366.
2. Ascoli, U. and Ranci, C. (2002). Dilemmas of the welfare mix: The new structure of welfare in an era of privatization. New York: Springer
3. Andreotti, A., Mingione, E. and Polizzi, E. (2012). Local welfare systems: A challenge for social cohesion, Urban Studies, 49(9), 1925–1940.
4. Beijing City Report. (2018). 北京市老龄事业和养老服务发展报告 （2016 年—2017 年） (Beijing city report on the elder age industry and eldercare service development (2016–2017)）, Beijing Civil Affairs Bureau, http://mzj.beijing.gov.cn/attached/file/20180515/20180515155035_570.pdf (accessed June 30, 2019).
5. Beijing Civil Affairs Bureau. (2009). 关于贯彻落实《北京市市民居家养老（助残）服务（“九养”）办法》的意见 (Opinions on the Implementation of the “Measures for Home-based Elderly Care (Disabled Assistance) Services for Citizens in Beijing (“Nine Care”)”), https://www.beijing.gov.cn/zhengce/zhengcefagui/qtwj/201106/t20110610_567111.html