MUHSON, Ali. Portfolio Based Instruction Sebagai Model Pembelajaran. Jurnal Ekonomi dan Pendidikan, [S. l.], v. 8, n. 1, 2012. DOI: 10.21831/jep.v8i1.707. Disponível em: https://journal.uny.ac.id/index.php/jep/article/view/707. Acesso em: 19 jul. 2025.