Sinaga, R. L., & Leonard Roberto Sinaga. (2021). Effect of Service Quality on Customer Satisfaction at PT. PLN (Persero) Rayon Siborong Borong Sibolga Area. Jurnal Mantik, 4(4), 2512-2516. https://doi.org/10.35335/mantik.Vol4.2021.1201.pp2512-2516