Pratama, Galih Chandra, Wagiran Wagiran, and Soeprapto Rachmad Said. “Pengembangan Off Job Training Spesialis Perbaikan Boom Excavator Dengan Pengelasan GMAW Di PT Thiess”. Jurnal Dinamika Vokasional Teknik Mesin 1, no. 1 (October 28, 2016): 10–16. Accessed May 10, 2025. https://journal.uny.ac.id/index.php/dynamika/article/view/11450.