Piryani, R. M., R. S. Poudel, S. Shrestha, and A. Prajapati. “Assessment of nurses’ Knowledge on Rotahaler Device in a Teaching Hospital of Central Nepal”. Journal of Chitwan Medical College, vol. 5, no. 4, Feb. 2017, pp. 27-32, https://nepjol.info/index.php/JCMC/article/view/16548.