Manik, G. and Nasution, M. 2026. Grabbike User Loyalty In Medan: Is Brand Engagement And Quality Perception Decisive?. EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis. 14, 1 (Jan. 2026), 251–268. DOI:https://doi.org/10.37676/ekombis.v14i1.8956.