S. N. . Shamsudin, E. . Abu Bakar, S. . Osman, and N. R. S. . Mohd Dali, “Konsep Halalan Tayyiban bagi Produk Nutraseutikal: Halalan Tayyiban Concept for Nutraceutical Product”, j. ftw. mgt. res., vol. 28, no. 1, pp. 69–84, Jan. 2023.