Noorhuda Abdul Karim. “Operationalizing Istiqamah, Muraqabah, and Adab in Digital Education: Content Validation and Preliminary Psychometric Evidence”. International Journal of Special Education, vol. 41, no. 24s, Oct. 2026, pp. 826-39, https://www.internationalsped.com/index.php/ijse/article/view/7011.