KHOLILUL KHOLIK; DENI SPARTAN. Work Engagement, Organizational Culture, and Employee Loyalty in Shaping Performance: A Qualitative Case Study of Sustainability Strategy in a Post-Merger State-Owned Port Operator. International Journal of Health, Economics, and Social Sciences (IJHESS), v. 8, n. 3, p. 1068~1083, 30 Jul. 2026.