Mahamad Maifiah, Mohd Hafidz, and Wan Nur Ezzah Syahirah Wan Ismail. “Porcine And Bovine-Derived Ingredients: Islamic Rules in Halal Pharmaceutical Products”. Journal of Fatwa Management and Research 28, no. 3 (September 30, 2023): 41–57. Accessed March 31, 2025. https://jfatwa.usim.edu.my/index.php/jfatwa/article/view/549.