Abid Muhtarom; Edie Sugiarto; Sabilar Rosyad; Moh Ma’ruf Dzawin Nadzar. THE EFFECT OF PRODUCT QUALITY, PRICE, PROMOTION AND QUALITY OF SERVICE ON CUSTOMER LOYALTY IN PURCHASE DECISION MEDIATION (MSME CRAFTING BAGS FROM SYNTHESIS LEATHER MATERIAL IN BOJOASRI, KALITENGAH LAMONGAN) ANALYSIS OF THE STRUCTURE METHOD (SQUARE (PLEST. Jurnal Ekonomi 2022, 11, 438-447.