Faisal, Faisal, Nahrun Hartono, and Muhammad Syafei. “Pengunaan Formula Haversine Pada Sistem Informasi Pencarian Guru Mengaji”. Journal Software, Hardware and Information Technology 1, no. 1 (February 10, 2021): 13–23. Accessed April 3, 2025. http://shift.sin.fst.uin-alauddin.ac.id/index.php/shift/article/view/3.