Mustapa, Siti Indati, and Hussain Ali Bekhet. “Investigating Factors Affecting CO2 Emissions in Malaysian Road Transport Sector”. International Journal of Energy Economics and Policy 5, no. 4 (October 14, 2015): 1073–1083. Accessed December 24, 2024. https://econjournals.com.tr/index.php/ijeep/article/view/1454.