Ray Setiawan, Samuel. “Operational Management Practices for Employee Job Satisfaction and Employee Retention: A Study at SJ Security”. Journal Research of Social Science, Economics, and Management 6, no. 1 (August 11, 2026): 189–206. Accessed August 11, 2026. https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/1671.