Abdul Khalek, A., and S. H. Syed Ismail. “A Conceptual Framework On The Factors Influencing Halal Consumption: An Exploratory Study Among Muslim Consumers In Malaysia”. Online Journal of Research in Islamic Studies, vol. 2, no. 3, Dec. 2015, pp. 1-12, https://jati.um.edu.my/index.php/RIS/article/view/9957.