“PENINGKATAN HASIL BELAJAR SEJARAH MELALUI PENERAPAN METODE PEMBELAJARAN PROBLEM SOLVING PADA SISWA KELAS XI SMA NEGERI 3 KUPANG” (2026) Integrative Perspectives of Social and Science Journal, 3(10 Oktober), pp. 558–564. Available at: https://ipssj.com/index.php/ojs/article/view/2083 (Accessed: 21 October 2026).