Parina, Irma, and Istanto Istanto. “The Principal’s Leadership Strategy in Developing the Religious Character of Students at SMK Muhammadiyah 1 Sragen”. Journal of Mathematics Instruction, Social Research and Opinion 5, no. 2 (April 30, 2026): 1445–1454. Accessed July 27, 2026. https://journal-gehu.com/index.php/misro/article/view/1200.