1.
Muhammad Dawamul Mughni, Putri Aisyiyah Rakhma Devi. Implementation Of Teacher Presence System Using Mobile-Based Geofencing & Haversine Formula Methods. ATCSJ [Internet]. 2023Jun.30 [cited 2024Jul.3];6(1):31-40. Available from: https://journal2.unusa.ac.id/index.php/ATCSJ/article/view/4119