Analisis Persepsi Siswa Terhadap Lingkungan Sekolah Di SMA Swasta Santa Maria Medan. JKIP [Internet]. 3 noiembrie 2025 [citat 30 iulie 2026];6(4):1603-15. Disponibil la: https://journal.al-matani.com/index.php/jkip/article/view/1689