Dr. Tahira Khanam, and Prof. Dr. Sarmad Hussain. “Role of Linguistic Similarity in the Acquisition of Imperative Request Form by Urdu Punjabi Simultaneous Bilinguals: A Study of Bilingual Children Living in Lahore, Pakistan”. Al-Qamar, vol. 4, no. 4, Dec. 2021, pp. 169-76, https://alqamarjournal.com/index.php/alqamar/article/view/1081.