RAKHMAWATI, Ditta Mustika; PRIYANA, Joko. A Study on 21st Century Skills Integration in the English Textbook for Senior High School: Kajian Integrasi Keterampilan Abad 21 dalam Buku Teks Bahasa Inggris untuk Sekolah Menengah Atas. JEES (Journal of English Educators Society), [S. l.], v. 4, n. 1, p. 9–16, 2019. DOI: 10.21070/jees.v4i1.1873. Disponível em: https://jees.umsida.ac.id/index.php/jees/article/view/1627. Acesso em: 17 aug. 2025.