Alfie Syarifah, Y., and E. B. P. . Putri. “Factors Related to Consumer Preferences of Halal Certified Restaurants (Case Study in Fast Food Restaurant X)”. Journal of Halal Research, Policy, and Industry, vol. 1, no. 1, July 2022, pp. 1-7, https://journal2.unusa.ac.id/index.php/jhrpi/article/view/3225.