Mohd Zakaria, Z., and N. Mohd Rahimi. “Konsonan Arab Berdasarkan Konsep Ansur Maju Dalam Pembelajaran Sebutan Peringkat Awal Pembelajaran: Arabic Consonants Based on the Concept of Learning Progression in the Early Stages of Learning Pronunciation”. EDUCATUM Journal of Social Sciences, vol. 1, no. 1, Oct. 2015, pp. 14-23, https://ojs.upsi.edu.my/index.php/EJOSS/article/view/80.