Worapon Kiatkittipong. 2012. Second generation of biodiesel production from potential energy sources in Thailand. Bangkok:Silpakorn University;
Worapon Kiatkittipong. (2012) Second generation of biodiesel production from potential energy sources in Thailand (รายงานผลงานวิจัย). Silpakorn University:Bangkok.
Worapon Kiatkittipong. Second generation of biodiesel production from potential energy sources in Thailand. Bangkok:Silpakorn University, 2012.
Worapon Kiatkittipong. (2012) Second generation of biodiesel production from potential energy sources in Thailand (รายงานผลงานวิจัย). Silpakorn University:Bangkok.