MOCHAMAD PRATAMA, ANDRIAN. Problem-Based Learning in Teaching Writing Hortatory Exposition Text to Eleventh Graders. RETAIN : Journal of Research in English Language Teaching, [S. l.], v. 6, n. 1, 2018. Disponível em: https://ejournal.unesa.ac.id/index.php/retain/article/view/24046. Acesso em: 28 jun. 2025.