Waruwu, Indah Kristin Reformani, and Yuterlin Zalukhu. 2026. “Analysis of the Influence of Service Quality and Customer Satisfaction on Customer Loyalty at Kopi Janji Jiwa, Jilid 738, Gunungsitoli City”. JURNAL ECONOMINA 5 (7):3494-3508. https://ejournal.45mataram.ac.id/index.php/economina/article/view/3062.