suparto, suparto. “APPLIED PRODUCTIVITY MEASUREMENT WITH OBJECTIVE MATRIX (OMAX) METHOD (Case Study: Service Department in PT. Astra International Tbk Auto 2000 - Kenjeran Branch)”. Tibuana 2, no. 02 (July 31, 2019): 26-30. Accessed January 19, 2022. http://jurnal.unipasby.ac.id/index.php/tibuana/article/view/1926.