Kurniawan, Y., H. Md. Som, N. M. Nik Abd. Rahman, O. Inayatullah, N. A. Yusuff, and N. Y. Musa. “Kesan Energi Selawat Nabi Berdasarkan Perubahan Warna Aura: The Energy Effects of Salutation Upon Prophet Muhammad Based on the Change of Colour Aura”. Perspektif Jurnal Sains Sosial Dan Kemanusiaan, vol. 8, no. 2, Nov. 2016, pp. 109-21, https://ojs.upsi.edu.my/index.php/PERS/article/view/1746.