Azrullah, Muhammad. “Pengaruh Kualitas Pelayanan Dan Keputusan Terhadap Loyalitas Pelanggan”. Jurnal Ilmiah Ecobuss 9, no. 1 (March 29, 2021): 9-17. Accessed June 30, 2025. https://ejournal.upm.ac.id/index.php/ecobuss/article/view/712.