Zakaria, N. F. Z., Zainal Abidin, Z., Abdullah Zawawi, M. A., & Shuhada, S. N. (2020). Bloodbuddy: a Tracking System for Blood Donor Using GPS. Journal of Engineering, Technology, and Applied Science (JETAS), 2(2), 86-102. https://doi.org/10.36079/lamintang.jetas-0202.117