Telaumbanua, R. A., Y. Mendrofa, Y. Zalukhu, and M. M. Bate’e. “The Influence of Brand Image and Service Quality on Indihome Customer Loyalty at PT Telekomunikasi Indonesia (Telkom) in Gunungsitoli City”. ProBisnis : Jurnal Manajemen, vol. 16, no. 5, Oct. 2025, pp. 1247-54, https://www.ejournal.joninstitute.org/index.php/ProBisnis/article/view/1147.