Andria, Y., Yoza, J., Yoserizal, Y., & Ramafina, S. F. (2023). The effect of outage duration and outage frequency on customer satisfaction of PT PLN (persero) ULP Simpang Empat. Enrichment : Journal of Management, 13(1), 537-545. https://doi.org/10.35335/enrichment.v13i1.1280