NOVIAR, I. Development of a Portfolio Strategy in Learning to Write Expositional Essays in Grade XI Students of SMA Negeri 3 Samarinda. Educationist: Journal of Educational and Cultural Studies, [S. l.], v. 1, n. 1, p. 142–154, 2022. Disponível em: https://jurnal.litnuspublisher.com/index.php/jecs/article/view/82. Acesso em: 15 nov. 2024.