Supriyatin, Nurnawati, and Erna. “PENGARUH PENERAPAN ACTIVE, JOYFUL, AND EFFECTIVE LEARNING (AJEL) PADA MATERI PERUBAHAN LINGKUNGAN TERHADAP SIKAP PEDULI LINGKUNGAN SISWA”. Biosfer: Jurnal Pendidikan Biologi 9, no. 2 (January 16, 2018): 69–75. Accessed November 24, 2024. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/5571.