“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): 3870-82. https://ipssj.com/index.php/ojs/article/view/1551.