Sapitri, Elfira Yunita, Khaerul Muttakin, and Subiyantoro. 2026. “Building Customer Loyalty Through Product Differentiation And Competitor Analysis: Evidence From A Natural Cosmetics MSME”. IQTISHADUNA: Jurnal Ekonomi Dan Keuangan Islam 16 (2):135-47. https://doi.org/10.20414/iqtishaduna.v16i2.14980.