Suryadarma, Engelbert Harsandi Erik. “Improving The Strength of The PLA 3D Printing Using Response Surface Methodology”. Prosiding Seminar Nasional Teknik Industri (SENASTI) 1 (October 3, 2023): 819–829. Accessed August 9, 2024. https://ojs.uajy.ac.id/index.php/SENASTI/article/view/8012.