Ratnasari, Ririn Tri, et al. “An Effort to Increase Waqf Intention: The Role of Celebrity Endorsers in Social Campaigns ”. Al-Uqud : Journal of Islamic Economics, vol. 7, no. 2, Apr. 2023, pp. 154-71, doi:10.26740/aluqud.v7n2.p154-171.