Pengaruh Model Problem Based Learning Terhadap Hasil Belajar Ekonomi Siswa Kelas XI SMA Negeri 1 Silahisabungan . Jurnal Pendidikan Ekonomi dan Entrepreneurship, [S. l.], v. 1, n. 1, p. 12–21, 2022. Disponível em: https://ejournal.uhn.ac.id/index.php/entrepreneurship/article/view/980. Acesso em: 2 oct. 2026.