An analysis of ELT coursebooks in terms of 21st century skills. Journal of Educational Sciences, [S. l.], v. 69, n. 4, p. 93–102, 2021. DOI: 10.26577/JES.2021.v69.i4.09. Disponível em: https://bulletin-pedagogic-sc.kaznu.kz/index.php/1-ped/article/view/1091. Acesso em: 13 jul. 2026.