Web-Based Procurement System for Mobile Phone Stock at Tsuraya Cell Using Blackbox Testing. International Conference on Multidisciplinary Studies Integrating Entrepreneurial Strategies and Digital Transformation [Internet]. 2025 Oct. 21 [cited 2026 Jan. 11];1(1):509-20. Available from: https://ejournal.unisbablitar.ac.id/index.php/icms/article/view/5055