IKA RAHMAWATI, YULY. THE READABILITY LEVEL OF READING TEXTS IN THE ENGLISH LANGUAGE TEXTBOOKS USED BY THE TENTH GRADE. RETAIN : Journal of Research in English Language Teaching, [S. l.], v. 2, n. 3, 2014. Disponível em: https://ejournal.unesa.ac.id/index.php/retain/article/view/8481. Acesso em: 29 jun. 2025.