Palomargareta, Gebriela, and Muhlasin Amrullah. 2021. “Da’wah of the Muhammadiyah Student Association in Tanggulangin District During the Covid 19 Pandemic”. Proceedings of The ICECRS 10 (October). https://icecrs.umsida.ac.id/index.php/icecrs/article/view/1177.