Sa-u, S., H. Mohd Ali, and M. S. Nordin. “Teacher Attribute Variables in Infusing Islamic Manners (Adab) in Classroom: Scale Validation”. Journal of Islamic Studies, Prince of Songkla University, vol. 7, no. 1, May 2016, pp. 74-87, https://so03.tci-thaijo.org/index.php/JOIS/article/view/150550.