Listri Herlina. “The DuPont System Re-Examined: Operating Efficiency, Asset Productivity, and Earnings Growth in Indonesia’s Capital-Intensive Public Utility Sector”. Journal Of Economic Cluster, vol. 3, no. 1, July 2026, pp. 121-34, https://jurnal.erapublikasi.id/index.php/JoEC/article/view/2627.