Bagus Firmansyah, Sultan. “Secularized Secondary School Schematic: Multi-Faith Teaching Etiquette Forecast”. Ittishal Educational Research Journal 2, no. 1 (February 22, 2021): 32–42. Accessed October 27, 2025. https://www.journal.ittishal.net/index.php/ierj/article/view/16.