“Development of Inventory and Goods Lending Systems Using QR Code at Universitas Muhammadiyah Kotabumi”. ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK 16, no. 1 (June 19, 2026): 88–105. Accessed June 24, 2026. https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v16i1.1616.