Andria, Yass, Jondri Yoza, Yoserizal Yoserizal, and Sonya Futri Ramafina. “The Effect of Outage Duration and Outage Frequency on Customer Satisfaction of PT PLN (persero) ULP Simpang Empat”. Enrichment : Journal of Management 13, no. 1 (April 30, 2023): 537-545. Accessed September 30, 2026. https://enrichment.iocspublisher.org/index.php/enrichment/article/view/1280.