PENGARUH MODEL PROBLEM BASED LEARNING BERBASIS DISKURSUS MULTI REPRESENTASI (DMR) TERHADAP TERHADAP PEMAHAMAN KONSEP MATERI SEJARAH SISWA KELAS XI SMKS MAHARDHIKA. (2026). Integrative Perspectives of Social and Science Journal, 3(06 Juni), 3870-3882. https://ipssj.com/index.php/ojs/article/view/1551