Putri SE, Aznam N. Enhancing students’ scientific attitudes with a problem-based learning model integrated green chemistry. J.Pendidik.Kim [Internet]. 2024 Dec. 30 [cited 2025 Jul. 6];16(3):244 – 250. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/65173