Umboh, Markus K, Tritiya A.R Arungpadang, and Brillian Davidson. 2021. “ANALISIS KOMPOSISI KIMIA PLAT RANTAI YAMAHA MX 135 MENGGUNAKAN ENERGY DISPERSIVE X-RAY SPECTROSCOPY”. Jurnal Tekno Mesin 7 (1):30-34. https://ejournal.unsrat.ac.id/v3/index.php/jtmu/article/view/36820.