Heryanti, Y. . “MENGUKUR KUALITAS PELAYANAN TERHADAP KEPUASAN PELANGGAN PADA PT. GLOBAL JET EXPRESS (J&Amp;T EXPRESS)”. Indonesian Journal Of Education and Humanity, vol. 1, no. 4, Nov. 2021, pp. 233-40, https://ijoehm.rcipublisher.org/index.php/ijoehm/article/view/74.