Khan, Maqsood Ahmed, et al. “SURVEY BASE STUDY ON CURRENT TREND OF TREATMENT OF COMMUNITY-ACQUIRED PNEUMONIA IN KARACHI”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 4, Apr. 2015, pp. 162-7, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/4757.