Tugihariani, D. and Budiarti, E. (2026) “Pengaruh Digital Promotion, Service Quality, dan Customer Value terhadap Customer Loyalty pada Optik Nusa di Jombang”, RIGGS: Journal of Artificial Intelligence and Digital Business, 4(4), pp. 12130–12137. doi: 10.31004/riggs.v4i4.5475.