Alisahelga Ivana Meliala; Muhammad Alfaredo Tarigan; Kiki Rizky Priwanda Putri; Kiki Rizky Priwanda Putri; Deni Faizal Mirza; Muhammaad Fadlan Mirza; Nurlina Harahap. THE EFFECT OF WORK ENVIRONMENT, SERVICE, CUSTOMER SATISFACTION ON EMPLOYEE PERFORMANCE AT COFFEE SHOP GEKO MEDAN CITY. IJEBAS 2026, 6, 828-830.