A. Sharma, A. M. Dixit, K. Krishnappa, R. Sharma, S. K. Shukla, and P. K. Jain, “A comparative study of sleep habits among medical and non-medical students in Saifai, Etawah”, Int J Community Med Public Health, vol. 5, no. 9, pp. 3876–3881, Aug. 2018.