“SERVICE QUALITY CONTROL MEASUREMENT: QUALITOMETRO II METHOD”. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri 9, no. 1 (July 4, 2007): 37–47. Accessed October 1, 2026. https://jurnalindustri.petra.ac.id/index.php/ind/article/view/16617.