Ratnasari, Ririn Tri, Yan Putra Timur, Mohamed Battour, and Usman Jamilu. “An Effort to Increase Waqf Intention: The Role of Celebrity Endorsers in Social Campaigns”. al-Uqud : Journal of Islamic Economics 7, no. 2 (April 15, 2023): 154–171. Accessed May 9, 2024. https://journal.unesa.ac.id/index.php/jie/article/view/22376.