P. K. Yadav, T. K. Bera, P. Mukharjee, S. Yadav, S. K. Sah, and S. K. Kar, “Audio-Visual Aids in Teaching-Learning Process of Health Science Students and Professionals”, J Univ Coll Med Sci, vol. 3, no. 4, pp. 50–52, Dec. 2015.