Panggabean, T. A. M., Harahap, U. N. and Utama, D. W. . (2024) “Optimization of Motorcycle Service Operator Performance Using Work Sampling Method at Giant Jaya Motor MSMEs”, IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA), 3(1), pp. 47–56. doi: 10.56862/irajtma.v3i1.91.