Sianturi, Susi, and Ade Hendriani. “PERANCANGAN SISTEM LIBRARY BERBASIS WEB MENGGUNAKAN METODE WATERFALL”. JURSIMA 9, no. 1 (April 19, 2021): 49 - 57. Accessed January 1, 2025. https://ojsiibn1.indobarunasional.ac.id/index.php/jursima/article/view/234.