Sriyanalugsana, Suphattra, and Jirapan Poparn. 2020. “Energy Saving Alternatives Analysis for the Internal Lighting System of a Construction Site Office: The Case Study of MRT BLUE LINE”. Thai Industrial Engineering Network Journal 6 (2):1-7. https://ph02.tci-thaijo.org/index.php/ienj/article/view/240987.