Wan Abdullah, Wan Suhaimi. “Konsep Al-Illah Wa Al-Ma’lul Ikhwan Al-Safa’: Satu Analisa Risalah Fi Al-’Ilal Wa Al-Ma’lulat”. Jurnal Usuluddin 2 (December 31, 1995): 175–193. Accessed November 6, 2024. http://mojes.um.edu.my/index.php/JUD/article/view/2957.