DOLOKSARIBU, M.; VERAYANTI MANALU, N. Tingkat Pengetahuan dan Kecemasan Lansia Tentang Penyakit Pandemi Covid-19 dikecamatan Uluan Kabupaten Toba. Jurnal sosial dan sains, [S. l.], v. 1, n. 12, p. 1.631 – 1.636, 2021. DOI: 10.59188/jurnalsosains.v1i12.280. Disponível em: https://sosains.greenvest.co.id/index.php/sosains/article/view/280. Acesso em: 21 nov. 2024.