Akbar MF, Fauzi A. Application of Waterfall Method In Design Of Web-Based Library Information System Program Case Study at Elementary School Warungnangka Kabupaten Subang. JTOS [Internet]. 2023Jun.22 [cited 2025Jun.6];6(1):72 -85. Available from: http://ejournal.uniks.ac.id/index.php/JTOS/article/view/3065