WafiDhani Khasbul, and Supriyono Supriyono. “Pengaruh Kualitas Pelayanan Terhadap Kepuasan Pelanggan Ninjaxpress Di Kabupaten Nganjuk”. Al-Kharaj : Jurnal Ekonomi, Keuangan & Bisnis Syariah 5, no. 4 (October 15, 2022): 1526-1541. Accessed November 15, 2024. https://journal.laaroiba.com/index.php/alkharaj/article/view/1752.