Damanik, Elsarika, Yunida Turisna Simanjuntak, and Dicky Yuswardi Wiratma. “PENCEGAHAN CORONA VIRUS DISEASE 19 (COVID-19) PADA PEDAGANG PASAR HELVETIA KELURAHAN HELVETIA TENGAH”. Jurnal Abdimas Mutiara 1, no. 2 (September 2, 2020): 8–11. Accessed January 29, 2026. https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/1323.