Yuliar, Ade, and Sri Handayani. “Service Quality Analysis on the Satisfaction of Umrah School Participants at the Rihaal Umrah and Education Bureau”. Munazzama: Journal of Islamic Management and Pilgrimage 1, no. 1 (January 1, 2021): 11–22. Accessed October 7, 2025. https://journal.walisongo.ac.id/index.php/munazzama/article/view/8779.