“PENINGKATAN HASIL BELAJAR MENGENAI MATERI KELANGKAAN EKONOMI MELALUI METODE PROBLEM BASED LEARNING PBL KELAS X IIS SMA NEGERI 17 HALMAHERA SELATAN”. Literacy: Jurnal Pendidikan Ekonomi, vol. 4, no. 2s, Oct. 2025, p. 12 17, https://doi.org/10.53682/jpeunima.v4i2s.8098.