Choudhury, A., S. Nargis, A. Mollah, L. Kabir, and R. Sarkar. “Determination of Risk Factors of Neonatal Pneumonia”. Mymensingh Medical Journal, vol. 19, no. 3, Sept. 2010, pp. 323-9, https://banglajol.info/index.php/MMJ/article/view/6113.