Syafrizaldi, Syafrizaldi, Syukur Kholil, Hasrat Efendi Samosir, and Ahmad Tamrin Sikumbang. “The Disaster Communication System in the City of Medan”. Jurnal Studi Komunikasi 6, no. 2 (July 30, 2022): 655 - 678. Accessed March 29, 2024. https://ejournal.unitomo.ac.id/index.php/jsk/article/view/4927.