Mohamad, Abdul Aziz, Ahmad Syukran Baharuddin, and Aminuddin Ruskam. “Halal Industry in Singapore: A Case Study of Nutraceutical Products”. Sains Humanika 4, no. 2 (February 1, 2015). Accessed November 22, 2024. https://sainshumanika.utm.my/index.php/sainshumanika/article/view/560.