Okolie, Chekwume. “Public Management Innovation in Improving the Quality of Public Services: A Systematic Literature Review 2015–2025”. Public Management and Accounting Review 7, no. 1 (Januari 31, 2026): 1–11. Diakses September 13, 2026. https://www.dhsjournal.id/index.php/PMAR/article/view/449.