Pratama, Fikri Wahyu, Eddy Siradj, and Okky Helja Rahman. “Failure Analysis on Tube Arm Cylinder Hydraulic Excavator”. Jurnal Pendidikan Teknologi Kejuruan 5, no. 4 (December 4, 2022): 101-104. Accessed May 18, 2024. http://jptk.ppj.unp.ac.id/index.php/jptk/article/view/294.