Amalia, Martina, Florance Rohani Gultom, and Suryani Hanum. “Tingkat Pengetahuan Pegawai PLN Lubuk Pakam Tentang Kaitan Penyakit Periodontal Dan Kesehatan Sistemik”. Tropical Public Health Journal 3, no. 2 (September 30, 2023): 97–104. Accessed August 14, 2025. https://idjpcr.usu.ac.id/trophico/article/view/13271.