I NYOMAN BAYU PRAMARTHA; NI PUTU YUNIARIKA PARWATI. Analisis Penerapan Sintaks Model Pembelajaran Problem Based Learning Pada Mata Pelajaran Sejarah Materi Kelas XI Proklamasi Kemerdekaan Indonesia : Analysis of Problem Based Learning Model in History Subject, Grade XI Material Proclamation of Indonesian Independence. Nirwasita: Jurnal Pendidikan Sejarah dan Ilmu Sosial, v. 6, n. 1, p. 69-74, 27 Mar. 2025.