SINAMBELA, Yefty Feniester; ASRIWANDARI, Hesti. Informal Economic Activities of the Elderly in Pekanbaru City. QISTINA: Jurnal Multidisiplin Indonesia, [S. l.], v. 3, n. 1, p. 809–817, 2024. DOI: 10.57235/qistina.v3i1.2427. Disponível em: https://rayyanjurnal.com/index.php/qistina/article/view/2427. Acesso em: 6 jul. 2026.