“MENGUKUR KETEPATAN KUALITAS INFORMASI SISTEM TRACER DAN TRACKING JASA KURIR”. Computer Based Information System Journal 6, no. 1 (Maret 31, 2018): 56. Diakses Oktober 6, 2026. https://ejournal.upbatam.ac.id/index.php/cbis/article/view/641.