Andriani, Reza Silvia, Deci Irmayani, and Ali Akbar Ritonga. “Web-Based Blood Donor Management Information Sytem Using Waterfall Method”. Sinkron : jurnal dan penelitian teknik informatika 6, no. 2 (May 11, 2022). Accessed July 16, 2024. https://jurnal.polgan.ac.id/index.php/sinkron/article/view/11423.