Siti Muthiatun Najiyah, Siti Aminah, Diah Ainun Khafidloh, Titin Nurhidayati. The Principal’s Policy in Developing Bilingualism at the As-Sunniyyah Darungan Yosowilangun Leading Madrasah. responsive [Internet]. 2026 Jun. 13 [cited 2026 Jun. 18];2(2):82-8. Available from: https://responsive.hellowpustaka.id/index.php/i/article/view/71