Panjaitan, Nismah, and Utari Noor Afifah Panggabean. “Analysis Noise Level in Production the Palm Oil: A Case Study”. Jurnal Teknik Industri 23, no. 2 (August 31, 2022): 121–132. Accessed July 7, 2024. https://ejournal.umm.ac.id/index.php/industri/article/view/19754.