SAPRISUL, and G. Sirait. “PERANCANGAN PENGUKURAN KENYAMAN KEPUASAN PELANGGAN DALAM BERBELANJA DI GUARDIAN BATAM”. Computer and Science Industrial Engineering (COMASIE), vol. 7, no. 3, Oct. 2022, pp. 59-66, https://forum.upbatam.ac.id/index.php/comasiejournal/article/view/5955.