Sumarnis, L. V., A. Arinastuti, and A. Pahlevi. “Improving Customer Satisfaction at Purwanegara Gas Station in Purwokerto Through Service Quality”. ProBisnis : Jurnal Manajemen, vol. 17, no. 1, Jan. 2026, pp. 298-06, https://ejournal.joninstitute.org/index.php/ProBisnis/article/view/1393.