Bisht, M., S. Agarwal, and D. Upadhyay. “Utility of Papanicolaou Test in Diagnosis of Cervical Lesions: A Study in a Tertiary Care Centre of Western Uttar Pradesh”. International Journal of Research in Medical Sciences, vol. 3, no. 5, Jan. 2017, pp. 1070-6, https://www.msjonline.org/index.php/ijrms/article/view/1445.