Pengaruh Kualitas Pelayanan, Ketepatan Waktu Pengiriman, dan Tracking System terhadap Kepuasan Pelanggan J&T Grogol. Educational Studies and Research Journal, [S. l.], v. 3, n. 2, p. 144–153, 2026. DOI: 10.60036/8kb6ne84. Disponível em: https://journal.midpublisher.com/index.php/esrj/article/view/474. Acesso em: 19 aug. 2026.