Agnesa, Tania. “Correlation Between Student’s Knowledge of Ecology Concepts With Ecological Footprint Based on Gender”. IJEEM - Indonesian Journal of Environmental Education and Management 1, no. 1 (January 31, 2016): 93 - 100. Accessed April 21, 2025. http://103.8.12.212:33180/unj/index.php/ijeem/article/view/3695.