Saragih, P. C. ., E. Wijaya, and F. A. Tarigan. “Design of a Web-Based Viar Electric Motor Unit Ordering System Using the Waterfall Method”. Journal of Artificial Intelligence and Engineering Applications (JAIEA), vol. 5, no. 1, Oct. 2025, pp. 1701-5, doi:10.59934/jaiea.v5i1.1694.