KURNIAWATI, AMALIYA. “PENGEMBANGAN BAHAN AJAR IPA TERPADU TEMA LETUSAN GUNUNG BERAPI KELAS VII DI SMP NEGERI 1 KAMAL”. PENSA E-JURNAL: PENDIDIKAN SAINS 1, no. 01 (January 30, 2013). Accessed December 14, 2025. https://ejournal.unesa.ac.id/index.php/pensa/article/view/1342.