Sampath, K., and T. Sundaramoorthy. “Knowledge of Teachers and Students on Environmental Concerns from Elementary Eco-Schools in Cuddalore District of Tamilnadu State”. JOURNAL OF INDIAN EDUCATION, vol. 39, no. 4, Feb. 2014, pp. p. 117-128, http://14.139.250.109:8090/index.php/jie/article/view/1433.