Putranti, H. R. D., D. Hendaryadi, and T. Widayati. “Analysis of the Effect of Service Quality on Customer Loyalty Through Commitment Service Quality: Study in Rest Area 65A and 65B Jasa Marga Kualanamu Tol”. European Journal of Business and Management Research, vol. 8, no. 1, Feb. 2023, pp. 259-64, doi:10.24018/ejbmr.2023.8.1.1774.