Nugraha, Isna, and Dwi Sukma Donoriyanto. “Quality Control Analysis to Reduce Instant Noodle Product Defects With Six Sigma and Kaizen Method”. Nusantara Science and Technology Proceedings 2023, no. 36 (December 20, 2023): 231–238. Accessed June 17, 2025. https://nstproceeding.com/index.php/nuscientech/article/view/1072.