Abdullah, Muhammad Yusuf Marlon. “Tahap Pengetahuan Non-Muslim Di Selangor Terhadap Islam : The Level of Knowledge of Non-Muslims in Selangor Toward Islam ”. The Journal of Social Analysis and Sustainability Studies (JSASS), vol. 5, no. 2, Nov. 2018, pp. 66-75, https://jsass.uis.edu.my/index.php/jsass/article/view/52.