Turu NdapaOtu, Nelson, and Pingky Alfa R. L. Lede. “Design of a Web-Based Information System for Incoming and Outgoing Mail Archiving Using the Waterfall Method in Kambata Tana Village East Sumba”. Journal of Artificial Intelligence and Engineering Applications (JAIEA) 3, no. 3 (June 15, 2024): 887–891. Accessed February 11, 2025. https://ioinformatic.org/index.php/JAIEA/article/view/570.