Bahrudin, Mohammad, and Hana Catur Wahyuni. 2017. “Measurement of Employee Work Productivity in the Production Department by Using Objective Matrix (OMAX) and Root Cause Analyze (RCA) Methods: Pengukuran Produktivitas Kerja Karyawan Pada Bagian Produksi Dengan Menggunakan Metode Objective Matrix (OMAX) Dan Root Cause Analyze (RCA)”. PROZIMA (Productivity, Optimization and Manufacturing System Engineering) 1 (2):116-22. https://doi.org/10.21070/prozima.v1i2.1299.