Shahar, S. M., Zamsiswaya, dan N. F. Bte Salman. “The Empowerment of the Educational Concept of Spiritual Rehabilitation of Muslim Prisoners in Singapore Prison”. TAWAZUN: Jurnal Pendidikan Islam, vol. 16, no. 3, Desember 2023, hlm. 529-48, doi:10.32832/tawazun.v16i3.15186.