YULIA ARISKA, UTARI. PENSA E-JURNAL: PENDIDIKAN SAINS, [S. l.], v. 4, n. 02, 2016. DOI: 10.26740/pensa.v4i02.14909. Disponível em: https://ejournal.unesa.ac.id/index.php/pensa/article/view/14909. Acesso em: 19 nov. 2025.