HAKIM, Nurul et al. POSYANDU LANSIA ONLINE. Journal of Information System, Applied, Management, Accounting and Research, [S.l.], v. 4, n. 4, p. 118-123, nov. 2020. ISSN 2598-8719. Available at: <https://www.journal.stmikjayakarta.ac.id/index.php/jisamar/article/view/291>. Date accessed: 06 july 2025.