Idress, Muhammad, Yasmin Nergis, Jawad Abdullah Butt, and Mughal Sharif. “Ambient Air Quality Assessment in Karachi, Sindh Pakistan”. International Journal of Economic and Environmental Geology 12, no. 3 (March 11, 2023): 60–64. Accessed April 29, 2025. https://econ-environ-geol.org/index.php/ojs/article/view/64.