Apriyadi, Darmawan, Sarovah Widiawati, Nurul Nurul, and Rosmallini Putri. 2026. “The Effect of Online Tracking Systems and Timing Accuracy on Customer Loyalty Through Customer Satisfaction at J&T Express 2024”. Jurnal Siber Multi Disiplin 3 (4):627-38. https://doi.org/10.38035/jsmd.v3i4.830.