Fadzil, Nur Farhana, and Siti Amira Othman. “Interrelation Between Qai’lullah, Blue Light Exposure and Neurocognitive Performances: A Short Review”. Journal of Quranic Sciences and Research, vol. 2, no. 2, Dec. 2021, pp. 1-7, https://penerbit.uthm.edu.my/ojs/index.php/jqsr/article/view/9104.