Liondos, Vasileios. “Sustainability in the English School Textbooks: The Case of English Language Textbooks Taught in the Greek Primary School”. Sprin Journal of Arts, Humanities and Social Sciences 1, no. 09 (September 2, 2022): 12–23. Accessed April 19, 2024. https://sprinpub.com/sjahss/article/view/SJAHSS-1-9-1-12-23.