NASUTION, Zulkarnain; FRIDA, Ester Mei; BULOLO, Olina. PENGETAHUAN SIKAP DAN TINDAKAN LANSIA TENTANG PENCEGAHAN COVID-19 DI DUSUN III DESA BANGUN SARI KECAMATAN TANJUNG MORAWA KABUPATEN DELI SERDANG. JURNAL DARMA AGUNG HUSADA, [S.l.], v. 9, n. 2, p. 56 - 64, oct. 2022. ISSN 2656-7350. Available at: <https://jurnal.darmaagung.ac.id/index.php/darmaagunghusada/article/view/2401>. Date accessed: 05 may 2024.