RAHMAN, Delfia Ikhlasiah; GHOFUR, Abdul; SUPRAPTO, Wasis; CHURIWIYAH, Ulfah. Enhancing Students’ Knowledge of Environmental Issues through Problem-Based Learning: An Experimental Study. International Journal of Theory and Application in Elementary and Secondary School Education, [S. l.], v. 7, n. 02, p. 90–98, 2025. Disponível em: https://jurnal.ut.ac.id/index.php/ijtaese/article/view/13796. Acesso em: 21 oct. 2026.