BUGAJSKA, Beata. The ninth stage in the cycle of life – attempt to extend the E. H. Erikson’s theory. Exlibris Social Gerontology Journal, [S. l.], v. 9, n. 1, p. 19–36, 2021. Disponível em: https://ojs.wsb.edu.pl/index.php/bgs/article/view/693. Acesso em: 15 oct. 2026.