Purbasari, Lintang Titian, and Ririn Tri Ratnasari. “THE CONCEPTUAL MODELS OF E-SERVICE QUALITY TO INCREASE COMMITMENT WAQIF”. Jurnal Ekonomi dan Bisnis Islam (Journal of Islamic Economics and Business) 7, no. 2 (November 30, 2021): 289 –. Accessed April 29, 2025. https://e-journal.unair.ac.id/JEBIS/article/view/27581.