Satriawan, Abiyyu, and Yuswono Hadi. “Penentuan Persyaratan Teknik Dari Mesin Pemutar Adonan Es, Menggunakan QFD Fase Pertama”. Journal of Integrated System 1, no. 2 (March 11, 2019): 180–192. Accessed May 3, 2024. https://journal.maranatha.edu/index.php/jis/article/view/1048.