Shams, Shamim Ara, Zia ul Haq Anwar, and Samreen Zaheer. “The Acquisition of Principles and Parameters by Children Learning Urdu”. Pakistan Languages and Humanities Review 6, no. 4 (December 30, 2022): 562–570. Accessed May 5, 2024. https://ojs.plhr.org.pk/journal/article/view/327.