Diana ASA, Soetjipto BE, Churiyah M. Analysis Of The Influence Of Product Quality And Promotion & Reward Programs On Customer Loyalty Through Customer Satisfaction In Gold Savings Customers At BSI: Systematic Literature Review (SLR) With Bibliometrics. ECBIS [Internet]. 2026 May 22 [cited 2026 May 22];4(5):1485-504. Available from: https://ecbis.net/index.php/go/article/view/373