Ilyas, Mohammad. “Regional Seminar And Workshop On The International Islamic Calendar: Shawwal 21-24, 1408 June 7-10, 1988”. American Journal of Islam and Society 5, no. 2 (December 1, 1988): 293–298. Accessed April 11, 2025. https://ajis.org/index.php/ajiss/article/view/2723.