Yahya, Ahmad, and Imas Maesaroh. “Standard Operational Procedures for Congregational Services During The Covid-19 Pandemic at The Head Office Of Shafira Tour Travel Surabaya.”. Proceedings of International Conference on Da’wa and Communication 3, no. 1 (November 11, 2021): 336-344. Accessed February 22, 2026. https://proceedings.uinsa.ac.id/index.php/ICONDAC/article/view/666.