M. Syam, Hamdani, Marzuki Marzuki, Deni Yanuar, Muhammad Aminullah, and Maini Sartika. 2025. “The Role of Information Sources in Shaping Knowledge and Protective Behaviors Against Covid-19 Among Coffee Shop Visitors in Banda Aceh, Indonesia ”. Observatorio (OBS*) 19 (3). https://doi.org/10.15847/obsOBS19320252612.