Badar uz Zaman, and Farida Panhwar. “Linguistic Competencies of School Boys Living in Railway Colony, Dera Ghazi Khan: A Case Study in Sociolinguistics”. University of Chitral Journal of Linguistics and Literature, vol. 7, no. II, Dec. 2023, pp. 301-8, https://jll.uoch.edu.pk/index.php/jll/article/view/350.