MOHAMMAD RACHMAN WALUYO. IMPROVING QUALITY OF SERVICE BASED ON CUSTOMER SATISFACTION USING SERVQUAL AND QFD METHODS AT SEJAHTERA BUANA TRADA PULOGADUNG (ATPM X). Prosiding Seminar Nasional Waluyo Jatmiko, [S. l.], v. 18, n. 1, p. 347–357, 2026. DOI: 10.33005/wj.v18i1.177. Disponível em: https://semnasti.upnjatim.ac.id/index.php/semnasti/article/view/177. Acesso em: 4 feb. 2026.