Yusuf, Yusuf. “UPAYA MENINGKATKAN HASIL BELAJAR SISWA KOMPETENSI MINYAK BUMI DAN GAS ALAM MELALUI PENERAPAN PEMBELAJARAN COLLEGE BALL”. Jurnal Redox 7, no. 01 (December 20, 2018): 17–31. Accessed July 22, 2024. https://e-journal.umc.ac.id/index.php/JRE/article/view/522.