Feungpean, Manunart, and Sopa Chinwetkitvanich. “A Preliminary Study on Total Volatile Organic Compound (TVOC) Concentrations in Public Buses in Bangkok”. Applied Environmental Research 31, no. 2 (June 27, 2013): 15–23. Accessed April 26, 2024. https://ph01.tci-thaijo.org/index.php/aer/article/view/9689.