Rani Azizi Alatas, Alesa Putri, and Tono Subroto. “Application Of Quality Function Deployment (QFD) Method In Developing Eco-Friendly Cup Holder Design”. Jurnal Riset Ilmu Teknik 3, no. 1 (May 31, 2025): 44–55. Accessed October 22, 2025. https://jurnaljepip.com/index.php/jurit/article/view/168.