Nizam, N. K., M. S. A. Mohd Nawawi, and S. Man. “Analisis Perbandingan Dalam Kaedah Penentuan Zon Waktu Solat Di Malaysia: Comparative Analysis in Determining Method of Prayer Times in Malaysia”. Online Journal of Research in Islamic Studies, vol. 7, no. 2, Aug. 2020, pp. 37-53, http://adum.um.edu.my/index.php/RIS/article/view/27353.