Sriwichai ย. and Poovatanakul ว. (2021) “Saving electricity in schools with the innovative E Plus system”, Mahachula Academic Journal. Bangkok, Thailand, 8(3), pp. 39–59. Available at: https://so04.tci-thaijo.org/index.php/JMA/article/view/248327 (Accessed: 7 July 2022).