Harmonis, Harmonis, and Diah Febrina. “The Political Public Relations of Muhammadiyah Leader in the Covid-19 Pandemic Era”. International Journal of Media and Communication Research 3, no. 2 (July 30, 2022): 30–43. Accessed July 10, 2026. https://journal.uir.ac.id/index.php/ijmcr/article/view/9195.