QODRIYAH, L.; MULYASTUTI, H.; HADI, W. P. Development of Problem-Solving Skills Instrument in the Context of Toroan Waterfall: A Validity Study. Equator Science Journal, [S. l.], v. 4, n. 3, p. 425–436, 2026. DOI: 10.61142/esj.v4i3.496. Disponível em: https://ejournal.edukhatulistiwa.com/index.php/ESJ/article/view/496. Acesso em: 5 nov. 2026.