Supriyatin S, Nurnawati N, Heryanti E. PENGARUH PENERAPAN ACTIVE, JOYFUL, AND EFFECTIVE LEARNING (AJEL) PADA MATERI PERUBAHAN LINGKUNGAN TERHADAP SIKAP PEDULI LINGKUNGAN SISWA. Biosfer [Internet]. 2018Jan.16 [cited 2025Dec.14];9(2):69-5. Available from: http://103.8.12.212:33180/unj/index.php/biosfer/article/view/5571