Bolat Y, Deneme Gençoğlu S. The Integration of 21st Century Skills into Secondary School English Classes and the Challenges faced by Teachers. Int. J. of Cont. Edu. Res. [Internet]. 2024 Mar. 20 [cited 2024 Dec. 22];11(1):36-54. Available from: https://ijcer.net/index.php/pub/article/view/558