Sangkaew, M., Thiengkamol, N. and Thiengkamol, C. (2016) “Model of Ecosystem and Environmental Conservation Behavior of Junior High School Students”, KASEM BUNDIT JOURNAL, 17(2), pp. 140–150. available at: https://so04.tci-thaijo.org/index.php/jkbu/article/view/69404 (accessed: 28 September 2026).