References
- Administration for Community Living. (2018). The 2018 profile of older Americans. U.S. Department of Health and Human Services. https://acl.gov/sites/default/files/Aging%20and%20Disability%20in%20America/2018OlderAmericansProfile.pdf
- Agree, E. M. (2018). Demography of aging and the family. In National Academies of Sciences, Engineering, and Medicine; Division of Behavioral and Social Sciences and Education; Committee on Population, M. K. Majmundar & M. D. Hayward (Eds.), Future directions for the demography of aging: Proceedings of a workshop. National Academies Press (US). 159-186.
- U.S. Census Bureau. (2018). From pyramid to pillar: A century of change, population of the U.S. https://www.census.gov/library/visualizations/2018/comm/century-of-change.html