Romauli E.G. Siallagan. “Edukasi Gerkasa-Lasakit (Gerakan Lansia Sehat Sadar Penyakit)”. Sevaka : Hasil Kegiatan Layanan Masyarakat 1, no. 4 (November 30, 2023): 01–08. Accessed August 22, 2025. https://journal.stikescolumbiasiamdn.ac.id/index.php/Sevaka/article/view/90.