Ghafar, Ata ul. “A Corpus-Based Study of Metadiscourse Features Across Pctb Textbooks at Primary and Secondary Levels”. American Journal of Literature Studies 1, no. 1 (November 30, 2022): 40–48. Accessed July 3, 2024. https://ajpojournals.org/journals/index.php/ajls/article/view/1291.