Effectiveness of Self Instructional Material of Distance Education: avid Iqbal,Ehsan Mahmood,Muhammad Idrees. PJDOL, [S. l.], v. 5, n. 1, 2023. DOI: 10.30971/pjdol.v5i1.301. Disponível em: https://ojs.aiou.edu.pk/index.php/pjdol/article/view/301. Acesso em: 22 jul. 2024.