Mahyavanshi, D. K., S. S. Nagar, M. G. Patel, S. S. Nagar, S. K. Purani, and G. P. Kartha. “Evaluation of Immunization Coverage Among Children Aged 12-23 Months in Surendranagar City”. International Journal of Basic & Clinical Pharmacology, vol. 2, no. 3, Jan. 2017, pp. 286-9, https://www.ijbcp.com/index.php/ijbcp/article/view/1256.