Erdogan, K., M. Coban, and D. I. Kirisci. “A Comparative Study on an International ELT Textbook and a Local Textbook in Terms of English As a Lingua Franca ”. FIRE: Futuristic Implementations of Research in Education, vol. 3, no. 1, June 2022, pp. 31-38, https://firejournal.org/index.php/fire/article/view/61.