Widodo, Suko. “Is the Broadcast WhatsApp Group Still Effective for Delivering Emergency Messages to Gen Z?”. Jurnal Komunikasi Profesional 9, no. 1 (December 30, 2025): 024–034. Accessed June 20, 2026. https://ejournal.unitomo.ac.id/index.php/jkp/article/view/11713.