Basyir, M., M. Nasir, Suryati Suryati, and Widdha Mellyssa. “Determination of Nearest Emergency Service Office Using Haversine Formula Based on Android Platform”. EMITTER International Journal of Engineering Technology 5, no. 2 (January 13, 2018): 270-278. Accessed May 23, 2024. https://emitter.pens.ac.id/index.php/emitter/article/view/220.