Suharyanisa, S., Situmorang, M. and Hutauruk, D. (2022) “SOSIALISASI PENTINGNYA VITAMIN D DAN BERJEMUR PAGI HARI TERHADAP PENGETAHUAN MASYARAKAT KELURAHAN MEDAN HELVETIA DI MASA PANDEMI COVID-19”, Jurnal Abdimas Mutiara, 3(1), pp. 376–379. Available at: https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/2698 (Accessed: 30 January 2026).