Izzatillah, M., Natsir, F., Marsiani, E., Sihombing, R., & Sulistyohati, A. (2026). Hajjmate: Aplikasi Panduan Manasik Haji Mobile dengan Human-Centered Design. Bulletin of Information System Research, 4(1), 1-8. https://doi.org/10.62866/bios.v4i1.276