Robert Waller A, Sukchai S, Buosonte R, Thanrak P. The use of simplified energy calculations in ethical decision making of biofuels by secondary school students: A case study from a Thai international school. J. Renew. Energy Smart Grid Technol. [internet]. 2018 May 1 [cited 2025 Dec. 9];13(1). available from: https://ph01.tci-thaijo.org/index.php/RAST/article/view/43257