Azhari, Susiknan. “Cabaran Kalendar Islam Global Di Era Revolusi Industri 4.0: Global Islamic Calendar Challenge in Era Industrial Revolution 4.0”. Jurnal Fiqh 18, no. 1 (June 24, 2021): 117–134. Accessed November 22, 2024. https://ejournal.um.edu.my/index.php/fiqh/article/view/30691.