“Smart School Management System of Presence Monitoring Teacher As A Realtime With Rad (Rapid Application Development) Method at Khadijah High School Surabaya”. JEECS (Journal of Electrical Engineering and Computer Sciences) 6, no. 1 (June 30, 2021): 999–1004. Accessed March 16, 2026. https://ejournal.ubhara.ac.id/index.php/jeecs/article/view/54.