Hafiz Muhammad Qasim, Saher Asif, and Muhammad Imtiaz Shahid. “Identification of Modality in Thesis Writing: A Systemic Functional Linguistics Perspective”. Pakistan Journal of Languages and Translation Studies, vol. 10, no. 1, June 2022, pp. 151-68, https://pjlts.uog.edu.pk/index.php/pjlts/article/view/41.