Cognitive Function, Social Interaction, and Self Concept of Elderly Widows and Widowers. Journal of Family Sciences, [S. l.], v. 2, n. 2, p. 1–10, 2017. DOI: 10.29244/jfs.2.2.1-10. Disponível em: https://journal.ipb.ac.id/jfs/article/view/19155. Acesso em: 25 dec. 2025.