K. Ali, A. Vaqar, R. Vaqar, M. Zubair, and M. Khan, “Speech and Language Delay in Early Childhood: Insights from A Clinical Study in Islamabad, Pakistan: Speech and Language Delay in Early Childhood: Clinical Study”, PJHS-Lahore, vol. 7, no. 1, pp. 96–100, Jan. 2026.