Tutuhatunewa, Alfredo. “Aplikasi Metode Quality Function Deployment Dalam Pengembangan Produk Air Minum Kemasan”. ARIKA 4, no. 1 (March 5, 2010): 11-18. Accessed June 6, 2025. https://ojs3.unpatti.ac.id/index.php/arika/article/view/458.