Mamun, S., A. Nessa, M. Aktar, M. Hossain, and A. Saifullah. “Perception of Environmental Education and Awareness Among Mass People: A Case Study of Tangail District”. Journal of Environmental Science and Natural Resources, vol. 5, no. 2, Apr. 2013, pp. 263-6, doi:10.3329/jesnr.v5i2.14828.