IMAN SARI, FITRIA. PENSA E-JURNAL: PENDIDIKAN SAINS, [S. l.], v. 1, n. 03, 2013. DOI: 10.26740/pensa.v1i03.4307. Disponível em: https://ejournal.unesa.ac.id/index.php/pensa/article/view/4307. Acesso em: 3 nov. 2025.