SISTEM INFORMASI KEHADIRAN SATPAM BERBASIS WEBSITE DENGAN GEOTAGGING DAN ALGORITMA HAVERSINE. JOISM [Internet]. 2025 Jun. 16 [cited 2025 Sep. 3];7(1):57-65. Available from: https://devjurnal.amikom.ac.id/index.php/joism/article/view/2086