martolia, D S, et al. “Assessment of Knowledge about Vitamin a Prophylaxis Programme Among Health and Icds Functionaries In District Banda (u.P.)”. Indian Journal of Community Health, vol. 17, no. 1,2, Dec. 2005, pp. 29-32, https://www.iapsmupuk.org/journal/index.php/IJCH/article/view/105.