Ahmad Susawa. STRATEGI KEPALA SEKOLAH DALAM PENERAPAN BUDAYA LINGKUNGAN POSITIF DI SMP IBNU HAJAR BOARDING SCHOOL. unisanjurnal [Internet]. 2023Feb.28 [cited 2024May18];2(2):159-65. Available from: http://journal.an-nur.ac.id/index.php/unisanjournal/article/view/1184