SUSMITRA MUHAMMAD EFENDI; NURDIANA. An Analysis of Readibility of English Textbook Used by The Second Grade Students of SMK Negeri 1 Kelayang. TRANSFORM : Journal of English Language Teaching and Learning, North Sumatera, Indonesia, v. 13, n. 2, p. 88–96, 2024. DOI: 10.24114/tj.v13i2.66768. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jelt/article/view/66768. Acesso em: 5 jul. 2025.