“The Perception of Ageism, Generativity, and the Attainment of Developmental Tasks of Elderly Widowers and Widows in Bogor, West Java, Indonesia”. Journal of Family Sciences 1, no. 1 (July 1, 2016): 1–12. Accessed March 25, 2026. https://journal.ipb.ac.id/jfs/article/view/10259.