PENINGKATAN KEMAMPUAN MENULIS TEKS NEGOSIASI MELALUI MODEL PROBLEM-BASED LEARNING PADA SISWA KELAS X-1 SMA NEGERI 2 MADIUN. JMA [Internet]. 2025 Jul. 13 [cited 2025 Aug. 31];3(7). Available from: https://jurnal.mediaakademik.com/index.php/jma/article/view/2541