Narasimhulu, DP, and R Yashoda. “A Study of Effectiveness in Teaching Among the Secondary School Teachers in Kadapa District”. Shanlax International Journal of Education 5, no. 2 (March 29, 2017): 19-25. Accessed June 13, 2024. https://www.shanlaxjournals.in/journals/index.php/education/article/view/2716.