SIREGAR, Eveline. PENGEMBANGAN BELAJAR BERBASIS ANEKA SUMBER (BEBAS). Perspektif Ilmu Pendidikan, [S. l.], v. 15, n. VIII, p. 62–65, 2007. DOI: 10.21009/PIP.151.10. Disponível em: https://journal.unj.ac.id/unj/index.php/pip/article/view/7025. Acesso em: 22 nov. 2024.