Zahra, Iman, Maria Liaqat, and Ummara Qadeer. “Effects Effects of Breathing Exercises on Lung Volumes and Capacities Among Smokers”. International Islamic Medical Journal 2, no. 1 (December 30, 2020): 35–39. Accessed November 24, 2024. https://journal2.unusa.ac.id/index.php/IIMJ/article/view/1829.