Syed Bidin, S. N. B., and M. Y. @ Z. Haji Mohd Yusoff. “Perubahan Personaliti Kesan Uslub Tabshir Dan Indhar: Kajian Kes Di Sekolah Henry Gurney (SHG)”. Jurnal Usuluddin, vol. 27, June 2008, pp. 41-59, http://mojes.um.edu.my/index.php/JUD/article/view/6328.