Mohd Nawawi, Mohd Saiful Anwar, Saadan Man, Mohd Zambri Zainuddin, Raihana Abdul Wahab, and Nurulhuda Ahmad Zaki. 2015. “SEJARAH KRITERIA KENAMPAKAN ANAK BULAN DI MALAYSIA (History of the Criteria for Lunar Crescent Visibility in Malaysia)”. Journal of Al-Tamaddun 10 (2):61-75. https://ijie.um.edu.my/index.php/JAT/article/view/8690.