Srirugsa, Tanawat, Wittaya Wongklang, Suppakit Eiadtrong, and Prathan Srichai. “Ethanol on Port Fuel Injection Engine in Motorcycle Engine”. Princess of Naradhiwas University Journal 13, no. 3 (September 15, 2021): 211–228. accessed August 28, 2026. https://li01.tci-thaijo.org/index.php/pnujr/article/view/250837.