Kusumaningrum, D. 2024. Pengaruh Problem Based Learning terhadap Hasil Belajar pada Materi Analisis Kadar Air. JIIP - Jurnal Ilmiah Ilmu Pendidikan. 7, 9 (Sep. 2024), 10939-10942. DOI:https://doi.org/10.54371/jiip.v7i9.5659.